Retrieve/Delete snippets while plugin deactivated

In order to get around the error and disable the faulty snippet you can use the WPCode Safe Mode which will prevent any snippet from being executed on the site.

After activating the plugin again, to access the safe mode simply add the parameter wpcode-safe-mode=1 to your admin url, for example https://yoursite.com/wp-admin/?wpcode-safe-mode=1

Once you enter the safe mode you should simply deactivate the snippet from the WPCode interface. More details on how to access the safe mode can be found in this article: https://wpcode.com/docs/php-error-handling-safe-mode/

Thank you very much for the fast reply and the solution!