by srečko štok.
After upgrading from 2.3 to 2.8.1 (everything went smooth, seemingly) I get, when I click on category, an error message:
Notice: Undefined offset: 17 in /var/www/html/moodle/lib/navigationlib.php on line 1699
Notice: Trying to get property of non-object in /var/www/html/moodle/lib/navigationlib.php on line 1700
Notice: Trying to get property of non-object in /var/www/html/moodle/lib/navigationlib.php on line 1704
Category path order is incorrect and/or there are missing categories
Need some help please.
PHP Version 5.4.33