Troubleshooting

Unexpected Output while processing AJAX request

The following error can sometimes come up on the Site Administration menu (depending on your Mood...

Can’t create a new XMLDB file

The Moodle XMLDB plugin does some checks of the db/ folder in your plugin to ensure it has read/w...

Site Stuck at Upgrade

If you encounter the following: !!! Site is being upgraded, please retry later. !!! This in...

Plugin is Defective or Outdated

When upgrading you might see an error like this: Default exception handler: Plugin "{block nam...

Office 365 Email Settings

A few tips when configuring an Office 365 email account for your SMTP server settings in Moodle: ...

SCSS Max Execution Time Reached

If you have a site where the theme is not displaying correctly and you have confirmed it is not r...

Collation is not valid for character set

If you get an error like this when saving data (e.g. creating a new user): COLLATION 'utf8_bin' ...

The data source class does not exist

If you get the following during an upgrade, particularly from early Moodle 3.x versions to later,...