When upgrading Xinet Portal to version 2020.5, the system is looking for a file related to PHP 5.4. Unable to upgrade with PHP 5.6.
The first released version of Portal 2020.5.103 had issues with Zend Guard versioning. A new version of the installer 2020.5.106 has been released and is available on the portal. Install the new version to fix the issue with PHP 5.4.