Some users collide with such mistake at creation of a backup copy:
"A required parameter (backup_unique_code) was missing"
Backup does not work for some courses
Some courses fail to backup
This mistake appears at use dbsession. At a stage "check" the
information is not kept in session because the limit
"max_allowed_packet" in MySQL is exceeded.
Unfortunately, Moodle in any way does not process this mistake and does not notify on its reason.
MDL-6866
Error "A required parameter (backup_unique_code) was missing" solution
by Alex Djachenko -
Number of replies: 0