Installing this extension gives an error in phpBB3.3.0:

The file "/data/www/avrotros.nl/opgelicht/phpBB3.3.0/ext/tas2580/seourls/config/services.yml" does not contain valid YAML: The reserved indicator "@" cannot start a plain scalar; you need to quote the scalar at line 5 (near "- @auth").

Fix: quotes around the arguments.