'"media_edit_action" plugin does not exist' error when performing update
I believe that action at some point became deprecated and was removed from the media_entity module.  However, the configuration lingered and is blocking Drupal update from completing successfully.

What worked for me was to go the the Admin &gt; Configuration &gt; Development &gt; Configuration Synchronization &gt; Updates Report (menu tab).

If you view the Full Report, then you can see that the config for the media_edit_action is still present.

Use the pulldown menu on the right to delete that config.



When you run update again, then it should complete successfully.

Hope this helps!