Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, false given in /home/hdpru/htdocs/print.php:54 Stack trace: #0 /home/hdpru/htdocs/print.php(54): implode() #1 {main} thrown in /home/hdpru/htdocs/print.php on line 54