error/moodle/filternotenabled
From MoodleDocs
This is because you have not enabled a filter that you are trying to use.
Note: You are currently viewing documentation for Moodle 3.0. Up-to-date documentation for the latest stable version of Moodle may be available here: error/moodle/filternotenabled.
This is because you have not enabled a filter that you are trying to use.