Fatal error: Uncaught ArgumentCountError: Too few arguments to function error_handler(), 1 passed and exactly 4 expected in /customers/6/7/5/petlas.nl/httpd.www/system/startup.php:15 Stack trace: #0 [internal function]: error_handler(Object(Error)) #1 {main} thrown in /customers/6/7/5/petlas.nl/httpd.www/system/startup.php on line 15