Call to undefined function drupal_find_base_themes() in drupal-7.15/includes/module.inc on line 184

Ouch, that looks pretty bad. I'm not sure exactly how to trigger it (hopefully it's rare) but let's bump this issue in priority to get it some attention.

What contrib modules/themes do you have enabled on your site?

This would have been introduced by #761608: Missing theme settings values because list_themes() has inconsistent theme object data and for the most part it shouldn't be a problem, but looking at the code I don't think there's any actual guarantee that the theme system is loaded when the new code in the module system tries to call it. So for example, I am able to trigger this bug in a rather roundabout way if:
(a) one of my enabled themes is a subtheme, and
(b) one of my enabled modules has code in hook_boot() that calls module_list(TRUE).

As mentioned, that's hopefully pretty rare, but evidently not impossible so I think we need to fix it.

Here's a workaround that should fix it.

Let's start with Drupal 7 for now (not Drupal 8) so we can get this tested.

Thanks for the patch; it seemed to fix the problem for me too. In my case it was caused by the environment_module and a disabled sub-theme.

You can easily reproduce this with Registry Rebuild. Any attempt to run drush rr will result with:

o1.ftp@v226c:~/static/test/sites/site.com$ drush rr
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Call to undefined function drupal_find_base_themes() in /data/disk/o1/static/test/includes/module.inc, line 184

I have an aegir hostmaster platform setup and this error caused drush to stop working for all sites and took down all sites (all D7), regardless of theme (only 1 site in the platform had a subtheme - adaptive theme -> corolla - that is the site I ran the core upgrade on). Patch does not work for me

In fact this upgrade took down every single D7 site, regardless of which theme it is using (including marinelli, garland, bartik, etc ...) in my aegir hostmaster platform - and not just the admin pages - all pages show internal server 500 errors.

command line returns are as follows:

aegir@server1:~/platforms/Drupal7-10SocialGroup1/sites/sitename.com$ dr
ush up
Failed loading /usr/lib/php5/20100525/ioncube_loader_lin_5.3_ts.so: /usr/lib/ph
p5/20100525/ioncube_loader_lin_5.3_ts.so: undefined symbol: core_globals_id
Checked available update data for 59 projects. [status]
Update information last refreshed: Sat, 08/04/2012 - 12:11

Update status information on all installed and enabled Drupal projects:
Name Installed Proposed Status
version version
Address Field 7.x-1.0-b 7.x-1.0-be Up to date
eta3 ta3
Quiz 7.x-4.0-a 7.x-4.0-al Up to date
lpha9 pha9
Backup and 7.x-2.4 7.x-2.4 Up to date
Migrate
Backup and 7.x-1.x-d 7.x-1.x-de Up to date
Migrate Files ev v
Drupal core 7.14 7.15 Update available
Chaos tool 7.x-1.0 7.x-1.0 Up to date
suite
(ctools)
Calendar 7.x-3.4 7.x-3.4 Up to date
CAPTCHA 7.x-1.0-b 7.x-1.0-be Up to date
eta2 ta2
Google chart 7.x-1.1 7.x-1.1 Up to date
API
Facet API 7.x-1.0 7.x-1.1 Update available
Date 7.x-2.5 7.x-2.5 Up to date
Entity API 7.x-1.0-r 7.x-1.0-rc Up to date
c3 3
RDF 7.x-2.0-a 7.x-2.0-al Up to date
Extensions lpha4 pha4
Media 7.x-1.2 7.x-1.2 Up to date
Geocoder 7.x-1.1 7.x-1.1 Up to date
geoPHP 7.x-1.4 7.x-1.4 Up to date
GMap Module 7.x-2.x-d 7.x-2.x-de Up to date
ev v
HTML5 Media 7.x-1.0 7.x-1.0 Up to date
Invite 7.x-2.1-b 7.x-2.1-be Up to date
eta2 ta2
Libraries API 7.x-1.0 7.x-1.0 Up to date
Location 7.x-3.x-d 7.x-3.0-al SECURITY UPDATE available
ev pha1
Location 7.x-2.4 7.x-2.4 Up to date
Taxonomize
Mail admin 7.x-1.x-d 7.x-1.x-de Up to date
ev v
MediaFront 7.x-1.5 7.x-1.5 Up to date
Meta tags 7.x-2.5 7.x-2.5 Up to date
quick
Moon Phases 7.x-1.0 7.x-1.0 Up to date
Organic 7.x-1.4 7.x-1.4 Up to date
groups
OG Contact 7.x-1.x-d 7.x-1.x-de Up to date
ev v
Organic 7.x-1.0 7.x-1.0 Up to date
Groups create
permissions
OG Menu 7.x-2.1 7.x-2.1 Up to date
Organic 7.x-1.0 7.x-1.0 Up to date
groups
content links
Subgroups for 7.x-1.x-d 7.x-1.x-de Up to date
Organic ev v
groups
Organic 7.x-1.0 7.x-1.0 Up to date
groups views
OpenX 7.x-1.2 7.x-1.2 Up to date
Page Title 7.x-2.7 7.x-2.7 Up to date
Panels 7.x-3.2 7.x-3.2 Up to date
Pathauto 7.x-1.1 7.x-1.1 Up to date
Privatemsg 7.x-1.3 7.x-1.3 Up to date
Printer, 7.x-1.1 7.x-1.1 Up to date
email and PDF
versions
RDFa 7.x-1.x-d 7.x-1.x-de Update available
ev v
Reindex 7.x-1.x-d 7.x-1.x-de Up to date
ev v
Rules 7.x-2.1 7.x-2.2 Locked via drush. (Update available)
Search API 7.x-1.2 7.x-1.2 Up to date
ShareThis 7.x-2.4 7.x-2.4 Up to date
Simplenews 7.x-1.0-r 7.x-1.0-rc Up to date
c1 1
Site 7.x-1.0 7.x-1.0 Up to date
verification
Spambot 7.x-1.0 7.x-1.0 Up to date
Taxonomy CSV 7.x-5.10 7.x-5.10 Up to date
import/export
Taxonomy 7.x-1.0-b 7.x-1.0-be Up to date
Manager eta3 ta3
Token 7.x-1.1 7.x-1.1 Up to date
User 7.x-1.0-a 7.x-1.0-al Up to date
Relationships lpha4 pha4
User Points 7.x-1.0 7.x-1.0 Up to date
Variable 7.x-1.2 7.x-1.2 Up to date
Views 7.x-3.3 7.x-3.3 Up to date
Views 7.x-3.0 7.x-3.0 Up to date
Slideshow
Webform 7.x-3.18 7.x-3.18 Up to date
XML sitemap 7.x-2.0-r 7.x-2.0-rc Up to date
c1 1
AdaptiveTheme 7.x-2.3 7.x-2.3 Up to date
Corolla 7.x-2.2 7.x-2.2 Up to date
Garland 7.x-1.x-d 7.x-1.x-de Up to date
ev v

NOTE: A code update for the Drupal core is available.
Drupal core will be updated after all of the non-core modules are updated.

Security and code updates will be made to the following projects: Facet API [fac
etapi-7.x-1.1], Location [location-7.x-3.0-alpha1], RDFa [rdfa-7.x-1.x-dev]

Note: A backup of your project will be stored to backups directory if it is not
managed by a supported version control system.
Note: If you have made any modifications to any file that belongs to one of thes
e projects, you will have to migrate those modifications after updating.
Do you really want to continue with the update process? (y/n): y
Project facetapi was updated successfully. Installed version is now 7.x-1.1.
Backups were saved into the directory [ok]
/var/aegir/drush-backups/sitename/20120805052124/modules/facetapi.
Project location was updated successfully. Installed version is now 7.x-3.0-alph
a1.
Backups were saved into the directory [ok]
/var/aegir/drush-backups/sitename/20120805052124/modules/location.
Project rdfa was updated successfully. Installed version is now 7.x-1.x-dev.
Backups were saved into the directory [ok]
/var/aegir/drush-backups/sitename/20120805052124/modules/rdfa.

Code updates will be made to drupal core.
WARNING: Updating core will discard any modifications made to Drupal core files
, most noteworthy among these are .htaccess and robots.txt. If you have made an
y modifications to these files, please back them up before updating so that you
can re-create your modifications in the updated version of the file.
Note: Updating core can potentially break your site. It is NOT recommended to up
date production sites without prior testing.

Do you really want to continue? (y/n): y
Project drupal was updated successfully. Installed version is now 7.15.
Backups were saved into the directory [ok]
/var/aegir/drush-backups/sitename/20120805052124/drupal.
The external command could not be executed due to an application [error]
error.
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Call to undefined function drupal_find_base_themes() in
/var/aegir/platforms/Drupal7-10SocialGroup1/modules/system/system.module,
line 2563
You have new mail in /var/mail/aegir
aegir@server1:~/platforms/Drupal7-10SocialGroup1/sites/sitename.com$

aegir@server1:~/platforms/Drupal7-10SocialGroup1/sites/sitename.com$ dr
ush updb
Failed loading /usr/lib/php5/20100525/ioncube_loader_lin_5.3_ts.so: /usr/lib/ph
p5/20100525/ioncube_loader_lin_5.3_ts.so: undefined symbol: core_globals_id
PHP Fatal error: Call to undefined function drupal_find_base_themes() in /var/a
egir/platforms/Drupal7-10SocialGroup1/modules/system/system.module on line 2563
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Call to undefined function drupal_find_base_themes() in
/var/aegir/platforms/Drupal7-10SocialGroup1/modules/system/system.module,
line 2563
aegir@server1:~/platforms/Drupal7-10SocialGroup1/sites/sitename.com$ dr
ush cc all

PHP Fatal error: Call to undefined function drupal_find_base_themes() in /var/a
egir/platforms/Drupal7-10SocialGroup1/modules/system/system.module on line 2563

Fatal error: Call to undefined function drupal_find_base_themes() in /var/aegir/
platforms/Drupal7-10SocialGroup1/modules/system/system.module on line 2563
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Call to undefined function drupal_find_base_themes() in
/var/aegir/platforms/Drupal7-10SocialGroup1/modules/system/system.module,
line 2563
aegir@server1:~/platforms/Drupal7-10SocialGroup1/sites/sitename.com$ dr
ush updb
Failed loading /usr/lib/php5/20100525/ioncube_loader_lin_5.3_ts.so: /usr/lib/ph
p5/20100525/ioncube_loader_lin_5.3_ts.so: undefined symbol: core_globals_id
PHP Fatal error: Call to undefined function drupal_find_base_themes() in /var/a
egir/platforms/Drupal7-10SocialGroup1/modules/system/system.module on line 2563
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Call to undefined function drupal_find_base_themes() in
/var/aegir/platforms/Drupal7-10SocialGroup1/modules/system/system.module,
line 2563
aegir@server1:~/platforms/Drupal7-10SocialGroup1/sites/sitename.com$ dr
ush upc
Failed loading /usr/lib/php5/20100525/ioncube_loader_lin_5.3_ts.so: /usr/lib/ph
p5/20100525/ioncube_loader_lin_5.3_ts.so: undefined symbol: core_globals_id
PHP Fatal error: Call to undefined function drupal_find_base_themes() in /var/a
egir/platforms/Drupal7-10SocialGroup1/modules/system/system.module on line 2563

Fatal error: Call to undefined function drupal_find_base_themes() in /var/aegir/
platforms/Drupal7-10SocialGroup1/modules/system/system.module on line 2563
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Call to undefined function drupal_find_base_themes() in
/var/aegir/platforms/Drupal7-10SocialGroup1/modules/system/system.module,
line 2563
aegir@server1:~/platforms/Drupal7-10SocialGroup1/sites/sitename.com$ dr
ush up
Failed loading /usr/lib/php5/20100525/ioncube_loader_lin_5.3_ts.so: /usr/lib/ph
p5/20100525/ioncube_loader_lin_5.3_ts.so: undefined symbol: core_globals_id
PHP Fatal error: Call to undefined function drupal_find_base_themes() in /var/a
egir/platforms/Drupal7-10SocialGroup1/modules/system/system.module on line 2563

Fatal error: Call to undefined function drupal_find_base_themes() in /var/aegir/
platforms/Drupal7-10SocialGroup1/modules/system/system.module on line 2563
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Call to undefined function drupal_find_base_themes() in
/var/aegir/platforms/Drupal7-10SocialGroup1/modules/system/system.module,
line 2563
aegir@server1:~/platforms/Drupal7-10SocialGroup1/sites/sitename.com$

+++ b/includes/module.incundefined
@@ -181,6 +181,7 @@ function system_list($type) {
           // Make a list of the theme's base themes.
+          require_once DRUPAL_ROOT . '/includes/theme.inc';
           $lists['theme'][$key]->base_themes = drupal_find_base_themes($lists['theme'], $key);

This is the only change needed the header stuff is just metadata. A + sign means you have to add a file don't add the + when applying this to your files.

Please read: http://drupal.org/node/367392

24 days to next Drupal core point release.

Didn't want to do that...

1) You should have made a backup before upgrading (code and database)
2) If there were no database updates while upgrading you can download drupal 7.14 and replace all those files (http://drupal.org/node/1558424) READ 3 FIRST BEFORE DOING. This is not advised as it can brake everything again, should only be done in case you have a database backup.
3) you just did an incorrect patch, don't panic, take your wrongly patched file, look above at my previous instructions patch it the right way and replace the file through ftp

And before you panic and post 200 lines of errors you could tell us exactly how you patched this...

The patch isn't working for me

Thank you to Robin Milette, below - the platform is still 7.14 core, even though drush listed the upgrade to 7.15 as successful. Disabling / Enabling the Adaptive theme and Subtheme does not help. When I first checked in my db, the corolla subtheme status was set to 1 bootstrap set to 0, and the Adaptive Theme itself was set to 0 for both. I think this issue does belong in this queue because I tried to update core to 7.15 and drush reported it as successful. I have posted this in the aegir issue queue, too, but that maintainer stated that the problem was not on the aegir side.

Line 122? You're looking at Drupal 7.14.

I sent you an email in private, I don't think this belongs to this particular issue queue.

I have the feeling his is triggered by sub/base themes. And cause b the fact that the function is moved to theme.inc and potentially not loaded.

Not sure if loading the theme.inc file is the proper solution for this...

A heads up to solve this issue - the only backup i've got to work is for the 1 site that was english only - all the other D7 sites on the aegir platform are multilingual and the i18n isn't functioning. I know that recent changes to i18n and variable and i18n_variable have been major and have caused sites to go down - perhpas this core update did not properly take those changes into account? I notice that both the i18n and the i18n_variable modules are called in the bootstrap so in the db they are set to 1 for BOTH the status and bootstrap fields. (changing the bootstrap fields value to 0 for either or both of these modules does NOT bring the site back online)

For some reason when I ran drush upc on the 1 english-only site, and also the only site on my aegir platform that had adaptive theme and a sub theme enabled and corolla sub theme set to default, the drush status told me that the core upgrade to 7.15 was successful, but it did not upgrade the module.inc file to 7.15. What it did do was to change ownership of my aegir platform /sites/all/modules folder to uid:gid 0:0, so that when I try to restore an aegir backup it tells me that many of the modules like standard, backup and migrate, ctools,views, etc ... cannot be found (it states a version of a long list of modules cannot be found ... here is the beginning of the exact error in an aegir hostmaster site restore failed task:

Could not find a version of the standard module
Could not find a version of the backup_migrate module
Could not find a version of the backup_migrate_files module
Could not find a version of the captcha module
Could not find a version of the ctools module
Could not find a version of the page_manager module
Could not find a version of the views_content module
Could not find a version of the entity module

... and so on for all the contributed modules)

- hope this helps in solving this problem. When I manually restore directory ownership to aegir:aegir ownership - it still doesn't help.

last but not least - i see in the drushrc.php file for one of the sites that is down that it lists the core as 7.14, all the core modules as 7.15 and all the contributed modules as 7.14 - so the last core module "user" is listed as 7.15, then the next array listes the proile "standard" and lists it as 7.14 ... all the rest of the modules are 7.14

So for me, running an aegir setup, this problem is not fixed - I had an error trying to upgrade a site with a sub-theme that brought everything down - even all the other sites on the aegir platform, and, as you can see in my previous post, the error returned was in a different ile at a different place.

Patch works perfect. Hopefully this won't affect many sites.

Committed and pushed this hot-fix to 7.x to get us unblocked. But we should have test coverage for this.

Thank you, has also solved my problem

Again: just add the line in module.inc, in line 184:

if (empty ($ theme-> info ['base theme'])) {
/ / Make a list of the theme's base themes.
require_once DRUPAL_ROOT. '/ includes / theme.inc';
$ lists ['theme'] [$ key] -> = base_themes drupal_find_base_themes ($ lists ['theme'], $ key);

greetings Jens

I don't know if this is the same issue. I got this message after updating.

Notice: Undefined index: highlighted in include() (line 124 of /home/kaff/public_html/dev/modules/system/page.tpl.php).
Notice: Undefined index: sidebar_first in include() (line 136 of /home/kaff/public_html/dev/modules/system/page.tpl.php).
Notice: Undefined index: sidebar_second in include() (line 142 of /home/kaff/public_html/dev/modules/system/page.tpl.php).
Notice: Undefined index: bartik in drupal_theme_initialize() (line 100 of /home/kaff/public_html/dev/includes/theme.inc).
Notice: Trying to get property of non-object in _drupal_theme_initialize() (line 145 of /home/kaff/public_html/dev/includes/theme.inc).
Notice: Undefined index: bartik in drupal_theme_initialize() (line 100 of /home/kaff/public_html/dev/includes/theme.inc).
Notice: Trying to get property of non-object in _drupal_theme_initialize() (line 145 of /home/kaff/public_html/dev/includes/theme.inc).
Notice: Undefined index: bartik in drupal_theme_initialize() (line 100 of /home/kaff/public_html/dev/includes/theme.inc).
Notice: Trying to get property of non-object in _drupal_theme_initialize() (line 145 of /home/kaff/public_html/dev/includes/theme.inc).
Notice: Trying to get property of non-object in _theme_load_registry() (line 334 of /home/kaff/public_html/dev/includes/theme.inc).
Notice: Undefined index: bartik in theme_get_setting() (line 1332 of /home/kaff/public_html/dev/includes/theme.inc).
Notice: Trying to get property of non-object in theme_get_setting() (line 1379 of /home/kaff/public_html/dev/includes/theme.inc).

I would not know how to apply a patch. I was trying the update out on my test site so I just had to replace with copies of my live site and I am fine.
Can anyone tell by looking if this was an error on my part or an incompatibility?

Thanks.

Fix in #2 worked for me as well. Not sure how to write a test for this - does it only happen with drush rr, or are there other consistent ways to reproduce it as well?

Looking at registry rebuild, line 58 of registry_rebuild.drush.inc and I'd say there's now a bug in there, no? It's not very representative.

Olması gerektiği gibi oldu bence başarıllı çalışma olmuş tesekkurler herşey için

I had this error happen after I upgraded my local from Drupal 7.14 to 7.15, then when I updated remote with my new files this happened on the remote.

What I had not done was include the core directories /includes and /modules in my repository, and so those were not being updated with the Drupal 7.15 versions.

Yeah seems like

$include_dir . '/theme.inc',

needs to be added to the array, perhaps drupal 7.15 changes the behavior in system.module and registry_rebuild needs an update...?

Had this while developing a site with 7.15. I was renaming/tinkering with themes and subthemes.
"drush rr" was not working. With patch #2, it worked again. Thanks, David.

The Registry Rebuild related issue has been fixed: #1742574: Missing $include_dir . '/theme.inc', causes fatal errors in Drupal 7.15

Thanks everyone for the additional information provided in this issue!

I've gone ahead and updated the Drupal 7.15 release notes to reflect the current list of known affected modules. (For the Environment module, I also filed #1751704: Code should not call Drupal API functions outside of a function body in case that module wants to work around the situation for users of Drupal 7.15 like Registry Rebuild did; especially since in that case it arises from calling code in a way that modules are generally not recommended to do.)

Besides Environment and Registry Rebuild, does anyone know of other contrib modules that are affected? Looking at the list @webmaster-eddie posted in #8, it seems like there might be at least one more out there...

I also went ahead and added a mention of this fix in CHANGELOG.txt for the next release: http://drupalcode.org/project/drupal.git/commit/5ddd5d3

Oh, also, this is still a critical bug against Drupal 8, since no fix has been committed there yet.

Regarding tests, it's probably going to be a bit convoluted to write tests that set up a situation where this issue is triggered. On the other hand, not so convoluted that it didn't happen in real life, apparently :(

If tests are eventually added, those should be backported to Drupal 7 also, so adding the tag for that.

Re-rolled #4 for Drupal 8

Awesome, thanks! Committed and pushed to 8.x to get us out of critical mode. Now reducing to normal and indicating that this is a tests-only patch.

Drupal 7.16 was a security release only, so this issue is now scheduled for Drupal 7.17 instead.

Fixing tags accordingly.

Fixed in Drupal 7.17 - http://drupal.org/drupal-7.17-release-notes

Hi

I am new to Drupal and wonder if I have the same issue. Trying to develop my first sub-theme using omega tools 3x on drupal 7.19. Follow instructions I think correctly and get the list of errors below. Should this be fixed by the patch above and a bit more basically is there a link somewhere on how to install the patch I have not done one before... Apologise if this is not the correct place for this post..... Had to copy manually the generated sub theme to../drupal/htdocs/sites/all/themes....

This is a 7.19 not 8.x

Cheers
Richard ...

Notice: Undefined index: name in drupal_find_base_themes() (line 847 of /opt/bitnami/apps/drupal/htdocs/includes/theme.inc).
Notice: Undefined index: name in drupal_find_base_themes() (line 847 of /opt/bitnami/apps/drupal/htdocs/includes/theme.inc).
Notice: Undefined index: name in drupal_find_base_themes() (line 847 of /opt/bitnami/apps/drupal/htdocs/includes/theme.inc).
Notice: Undefined index: name in drupal_find_base_themes() (line 847 of /opt/bitnami/apps/drupal/htdocs/includes/theme.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_modules_by_info_name() (line 949 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Warning: uasort(): Array was modified by the user comparison function in system_themes_page() (line 139 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 148 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 190 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 199 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 205 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 148 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 190 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 199 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 205 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_themes_page() (line 148 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_themes() (line 962 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_themes() (line 962 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_themes() (line 962 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_themes() (line 962 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in system_sort_themes() (line 962 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Warning: uasort(): Array was modified by the user comparison function in system_themes_page() (line 245 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in drupal_find_base_themes() (line 847 of /opt/bitnami/apps/drupal/htdocs/includes/theme.inc).
Notice: Undefined index: name in drupal_find_base_themes() (line 847 of /opt/bitnami/apps/drupal/htdocs/includes/theme.inc).
Notice: Undefined index: name in drupal_find_base_themes() (line 847 of /opt/bitnami/apps/drupal/htdocs/includes/theme.inc).
Notice: Undefined index: name in drupal_find_base_themes() (line 847 of /opt/bitnami/apps/drupal/htdocs/includes/theme.inc).
Notice: Undefined index: name in theme_system_themes_page() (line 2733 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in theme_system_themes_page() (line 2733 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).
Notice: Undefined index: name in theme_system_themes_page() (line 2733 of /opt/bitnami/apps/drupal/htdocs/modules/system/system.admin.inc).

I have just upgraded from7.16 to 7.19. The site will not display and I have got a white screen apart from this error:

Fatal error: Call to undefined function drupal_find_base_themes() in /srv/bindings/c1d76bfd816941068ae593286996d3f0/code/includes/module.inc on line 185

What steps can I take to find out what is causing this?

I tried to apply the patch from #2, but it has already been applied in a previous release of drupal it seems.

Any help will be much appreciated

Please take a look at http://drupal.org/support for support questions.

The error still exists on Drupal 7. Even though the fix is committed - still I couldn't upgrade from 7.12 today.
Let's open a separate task for version 8.x.

If this is still happening in a current version of Drupal 7, the issue summary needs the steps to reproduce it.

This issue has had its code committed. If this caused other issues or didn't fix the issue completely, we should create a new follow-up issue. But given, how little comments there have been in 3 years, I'd guess its 100% fixed and the comments were unrelated to this code commit.

This was originally still open for tests, but I guess at this point they're not happening (or could happen in a new issue if desired).