500 Error Caused by Automatic Permission Change on controller.php File in PrestaShop 1.7.5.2

[Jixart31]

Hello.

I'm encountering a 500 error on my website, and it seems to be caused by the controller.php file, which automatically changes its permissions to 204. When I reset the permissions to 644 and clear the cache, the site works again. However, after 5 to 10 minutes, the 500 error reappears!

I haven't been able to identify the source of the problem, and I couldn't find any similar issues on the forum.

Has anyone else experienced this problem?

PrestaShop version: 1.7.5.2 PHP version: 7.3

The site was functioning correctly, and this issue appeared suddenly without any new module installations or updates. The bug started occurring out of nowhere. There's no console error or error in debug mode, except when the issue occurs, where it reports that the Controller class is not found because the controller.php file has been set to 204 permissions.

I ran a script for prestashop to identify modified files from original versions and everything looks fine.

[aixos]

Hi

Try changing to PHP 7.2, which is the one you need.

[baden32]

Hi Jixart31,
Since weeks, I can also see that my Prestahop main files (under controllers, classes, etc.) are automatically changed always at the same time (3:45 AM).
I cannot find how it's done therefore I would appreciate if you can let me know what you found on your site:

-was it done by a Prestashop cron process
-a specific call was done?
-??

Thanks in advance for your help.

Best
Bads

Edited October 17 by baden32
no terminated enter (see edit history)