The cause was determined using the following command:
php admin/cli/adhoc_task.php --showsql --showdebugging --execute
I found out that in one table of the database (within the Reservation plugin) there is a record for a user that no longer exists.
The reservation request persisted in the given reservation from this user (table reservation_request).
I found an error in cron log...
The cause was determined using the following command:
php admin/cli/adhoc_task.php --showsql --showdebugging --execute
I found out that in one table of the database (within the Reservation plugin) there is a record for a user that no longer exists. The reservation request persisted in the given reservation from this user (table reservation_request).
More info: [https://moodle.org/mod/forum/discuss.php?d=413095]