Warning: require(app/Mage.php): Failed to open stream: No such file or directory in /home3/chatwinc/public_html/xmlrequest2.php on line 4

Fatal error: Uncaught Error: Failed opening required 'app/Mage.php' (include_path='.:/opt/cpanel/ea-php80/root/usr/share/pear') in /home3/chatwinc/public_html/xmlrequest2.php:4 Stack trace: #0 {main} thrown in /home3/chatwinc/public_html/xmlrequest2.php on line 4