Fatal error: During inheritance of IteratorAggregate: Uncaught ArgumentCountError: Too few arguments to function default_error_handler(), 4 passed in /home/projectl/lms.projectlab.gr/lib/navigationlib.php on line 897 and exactly 5 expected in /home/projectl/lms.projectlab.gr/lib/setuplib.php:421 Stack trace: #0 /home/projectl/lms.projectlab.gr/lib/navigationlib.php(897): default_error_handler() #1 /home/projectl/lms.projectlab.gr/lib/setup.php(599): require_once('/home/projectl/...') #2 /home/projectl/lms.projectlab.gr/config.php(27): require_once('/home/projectl/...') #3 /home/projectl/lms.projectlab.gr/index.php(30): require_once('/home/projectl/...') #4 {main} in /home/projectl/lms.projectlab.gr/lib/navigationlib.php on line 897