Sudden error in Prestashop

Job ID: 31861215

Budget: €8 – €30 EUR

Hello,

if the debug mode is not enabled, BO is showing following error message:

Attempted to load class "AdminLegacyLayoutControllerCore" from the global namespace. Did you forget a "use" statement?
[Symfony\Component\Debug\Exception\ClassNotFoundException 0]

If I enable debug, BO is accessible again, but new orders are showing no status (screenshot attached).

Here are the steps that led to that error:

1. Yesterday no issues at all, today all combinations for all products were missing. And I haven't touched a single file, setting, etc ...
2. I cleared cache and tried to change PHP version to see if the issue persist
3. After changing PHP version I started to receive the "Attempted to load class...." error. I switched back to previous PHP version but the error message persists.

Thank you.
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