Hello,
Please make a backup of your site (database, /moodledata-dir, /moodle-dir). Make sure that your backup works (e.g. by a lokal installation).
Please make a backup of your site (database, /moodledata-dir, /moodle-dir). Make sure that your backup works (e.g. by a lokal installation).
Delete
/moodle/enrol/internal/
then on your system. The error should go away.
I'm referring to: http://tracker.moodle.org/browse/MDL-9162
... and own experience as well.
regards,
Maik