error/moodle/cannotcustomizelocallang
From MoodleDocs
This error occurs because you don't have the capability moodle/site:langeditlocal.
Note: You are currently viewing documentation for Moodle 3.11. Up-to-date documentation for the latest stable version of Moodle may be available here: error/moodle/cannotcustomizelocallang.
