37 minutes ago, Mediacom87 said:Hi,
Simply rename the module folder on your FTP.
For the debug mode, you can activate or deactivate it manually via FTP.
https://www.prestatoolbox.com/content/24-errors-messages-prestashop
when I set _PS_MODE_DEV_ as false at the start of the administration a white screen will appear. When I rename module folder an error message appears.