Amazon Price Calculator Spain

Fatal error: Uncaught Error: Undefined constant "msg" in /home/digibigadmins28d/public_html/amazon-price-calculator-spain.php:43 Stack trace: #0 /home/digibigadmins28d/public_html/index.php(66): include_once() #1 {main} thrown in /home/digibigadmins28d/public_html/amazon-price-calculator-spain.php on line 43