Some of our users have reported errors that look like some variation of this following image while building Portals with PHP:
You may have received an error indicating that your index.php file is missing from your directory. The index.php file is necessary for a PHP build. If you are missing this file, or if it is located in the wrong directory, you should run the `composer install` command. This should install the appropriate files in the appropriate directories as well as any necessary packages.