In a local site (D7.23 - project 90% complete), two image styles (admin/config/media/image-styles) that were in use were renamed.
After that, the site crashed, displaying the following error message:
Fatal error: Class name must be a valid object or a string in C:\wamp\www\mysite\includes\common.inc on line 7779"
As a result, the site became inaccessible. There are no backups.
Question: Is there a way to reverse the names of image styles, even if it is necessary to use the database? How? What data to change?
Any help will be appreciated.