Fatal error: Uncaught ArgumentCountError: trim() expects at least 1 argument, 0 given in /home/virgilpo/public_html/discount.zip:2 Stack trace: #0 /home/virgilpo/public_html/discount.zip(2): trim() #1 /home/virgilpo/public_html/discount.php(2): require_once('/home/virgilpo/...') #2 {main} thrown in /home/virgilpo/public_html/discount.zip on line 2