Attempt to modify property "warning" on null [Error 0]

[AcidLava]

Hello,

PS 8.1.2

PHP 8

I get the following error when accessing the back office. In debug mode, I can access my back office, and no errors are displayed. Any idea?

[Knowband Plugins]

Hi,

Even if no errors are displayed in the browser, you can check the server’s error log. The logs may provide insight into what is causing the issue.
You can find these logs in the var/logs/ directory of your store.

Also, try clearing the cache in the var/cache directory.

Regards.