Fatal error: During inheritance of IteratorAggregate: Uncaught ArgumentCountError: Too few arguments to function default_error_handler(), 4 passed in /home/isocml/public_html/learn/lib/navigationlib.php on line 897 and exactly 5 expected in /home/isocml/public_html/learn/lib/setuplib.php:425 Stack trace: #0 /home/isocml/public_html/learn/lib/navigationlib.php(897): default_error_handler(8192, 'Return type of ...', '/home/isocml/pu...', 1142) #1 /home/isocml/public_html/learn/lib/setup.php(610): require_once('/home/isocml/pu...') #2 /home/isocml/public_html/learn/config.php(27): require_once('/home/isocml/pu...') #3 /home/isocml/public_html/learn/login/index.php(27): require('/home/isocml/pu...') #4 {main} in /home/isocml/public_html/learn/lib/navigationlib.php on line 897