Fatal error: During inheritance of IteratorAggregate: Uncaught ArgumentCountError: Too few arguments to function default_error_handler(), 4 passed in /data/web/virtuals/207896/virtual/www/domains/1zsjh.cz/moodle/lib/navigationlib.php on line 893 and exactly 5 expected in /data/web/virtuals/207896/virtual/www/domains/1zsjh.cz/moodle/lib/setuplib.php:421 Stack trace: #0 /data/web/virtuals/207896/virtual/www/domains/1zsjh.cz/moodle/lib/navigationlib.php(893): default_error_handler(8192, 'Return type of ...', '/data/web/virtu...', 1138) #1 /data/web/virtuals/207896/virtual/www/domains/1zsjh.cz/moodle/lib/setup.php(599): require_once('/data/web/virtu...') #2 /data/web/virtuals/207896/virtual/www/domains/1zsjh.cz/moodle/config.php(27): require_once('/data/web/virtu...') #3 /data/web/virtuals/207896/virtual/www/domains/1zsjh.cz/moodle/pluginfile.php(32): require_once('/data/web/virtu...') #4 {main} in /data/web/virtuals/207896/virtual/www/domains/1zsjh.cz/moodle/lib/navigationlib.php on line 893