Enabling debug mode in Moodle

  1. Open the site admin panel.
  2. Go to section "Administration" and switch to tab "Developmentof".
  3. In the block "Developmentof" click "Debugging".
  4. In field "Debug messages" choose "DEVELOPER: Additional Moodle Debugger Messages for Developers" and save your changes.
  5. Perform the actions on the site that cause the error and examine the information returned by the debugger.