Possible errors

  1. My action is not executed and no errors in the response.

    EXT:routes does not throw all the errors back.

    It’s a good idea to check the var/log/typo3_*.log if your route has been mentioned in there.

  2. LMS3\Facade\Extbase\Plugin::getNameBasedOn() must be of type string, null returned.

    Check if plugin connected correctly. See.

  3. Class ‘auth’ not found

    Ensure TypoScript has been connected. See.