Warning: require(vendor/autoload.php): Failed to open stream: No such file or directory in /home/ondemand/test.ondemandpro.net/php-docs-samples/appengine/php72/slim-framework/index.php on line 23

Fatal error: Uncaught Error: Failed opening required 'vendor/autoload.php' (include_path='.:/opt/cpanel/ea-php80/root/usr/share/pear') in /home/ondemand/test.ondemandpro.net/php-docs-samples/appengine/php72/slim-framework/index.php:23 Stack trace: #0 {main} thrown in /home/ondemand/test.ondemandpro.net/php-docs-samples/appengine/php72/slim-framework/index.php on line 23