WordPress reports an error while updating

Hi all

Wordpress reports an error while updateing plugins:

“Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.

In this case, WordPress caught an error with one of your plugins, Media Cleaner.

First, visit your website (https://shop.anigma.de/) and check for any visible issues. Next, visit the page where the error was caught (https://shop.anigma.de/wp-admin/update-core.php) and check for any visible issues.

Please contact your host for assistance with investigating this issue further.”

Actualy i cannot access the site so dont can give more information about versioning .
Wordpress will be 5.8 or higher. Media Cleaner dont now exactly but i think it is up to dat until the last attemp for an update.

The page I need help with: [log in to see the link]