Fatal error: Uncaught TypeError: set_error_handler(): Argument #1 ($callback) must be a valid callback or null, function "customError" not found or invalid function name in /home/thetsjqq/kohchang.limo/reservation.php:15 Stack trace: #0 /home/thetsjqq/kohchang.limo/reservation.php(15): set_error_handler() #1 {main} thrown in /home/thetsjqq/kohchang.limo/reservation.php on line 15