error/moodle/setting by name not found
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Restoring a backup containing user data
This is a Moodle 3.3 regression and is fixed in 3.3.1. See MDL-59011 for details.
Restoring an activity backup
This error is displayed when attempting to restore an activity backup to a new course. It is reported as MDL-24342.
Workaround: Restore the backup into an existing course (which can be newly created and empty).
Restoring a backup containing plugin data
Alternatively, the error may be displayed when attempting to restore a backup of a course which uses an additional plugin.
Workaround: Remove the usage of the additional plugin in the course then create a new course backup.