Fatal error: Uncaught TypeError: array_unique(): Argument #1 ($array) must be of type array, null given in /home/cargohonduras/public_html/php/MultiPrint/MultiPrintFactura.php:818 Stack trace: #0 /home/cargohonduras/public_html/php/MultiPrint/MultiPrintFactura.php(818): array_unique(NULL) #1 {main} thrown in /home/cargohonduras/public_html/php/MultiPrint/MultiPrintFactura.php on line 818