Fatal error: During inheritance of IteratorAggregate: Uncaught ArgumentCountError: Too few arguments to function default_error_handler(), 4 passed in /web/htdocs/www.expwebfx.it/home/demoelearning/lib/navigationlib.php on line 897 and exactly 5 expected in /web/htdocs/www.expwebfx.it/home/demoelearning/lib/setuplib.php:421 Stack trace: #0 /web/htdocs/www.expwebfx.it/home/demoelearning/lib/navigationlib.php(897): default_error_handler() #1 /web/htdocs/www.expwebfx.it/home/demoelearning/lib/setup.php(599): require_once('...') #2 /web/htdocs/www.expwebfx.it/home/demoelearning/config.php(27): require_once('...') #3 /web/htdocs/www.expwebfx.it/home/demoelearning/course/index.php(26): require_once('...') #4 {main} in /web/htdocs/www.expwebfx.it/home/demoelearning/lib/navigationlib.php on line 897