Drupal 6.x

I have a site built with Drupal 6.20 hosted by OVH. I had a problem in December because the php versio was on 5 in the .htaccess and I put it on 5.3 (I was told that beyond it is not supported by Drupal 6) and then the site worked correctly.
Since 3 months I have not changed or even accessed the site which was working perfectly but in recent days, it displays "Error 500".

I'm approaching week 10 of trying to get a relatively simple D6 site to upgrade to D8. The migrate tools, either through drush or through the web UI appear to get us nowhere - content is never moved, users are moved, but the information seems incorrect and it appears permissions are changed - as well as user1 from the new site being overwritten with user1 from the old site, making admin access somewhat wonkey.

I'm wondering if a traditional in-place upgrade is even an option. It seems that it can't be as bad, let alone worse, than using the upgrade tools...

We are trying (for the second time) to upgrade D6 to D7 for a site with a 40GB database.

Everything *seems* to have upgraded properly except the Taxonomy.

On the D6 site the
- term_node table has about 71M rows and is 8.2 GB.
- term_data table has about 2M rows and is 238 MB.

After doing the upgrade and getting this error:

Update #7005
Failed: DatabaseSchemaObjectExistsException: Table taxonomy_update_7005 already exists. in DatabaseSchema->createTable() (line 660 of ... /includes/database/schema.inc).

• Advisory ID: DRUPAL-SA-CONTRIB-2016-024
• Project: EPSA Crop - Image Cropping (third-party module)
• Version: 7.x
• Date: 2016-April-20
• Security risk: 18/25 ( Critical) AC:None/A:None/CI:Some/II:Some/E:Theoretical/TD:All
• Vulnerability: Cross Site Scripting, Cross Site Request Forgery

Hi

We are looking to migrate from 6 to 7, and would like to get into contact with someone that has the experience to perform this.

We use our website as a storefront and need to make sure you know how to manage SSL certificates, severs, shipping mod's.

Looking for someone to permanently manage the website.

Please contact me at

Ty
candoprinting@yahoo.com
602-233-1111x59
U.S.