After updating a Module to the latest version, the server config page is blank or partially loaded.
Any OnApp Version
Current WHMCS Modules
This issue occurs when multiple Modules are installed but only one of them has been updated. Updating all of the modules should allow the page to load normally.
If you're using the OnApp Users module, please make sure the PHP Wrapper is updated to the latest version as well. https://github.com/OnApp/OnApp-PHP-Wrapper-External/releases
The wrapper installation directory is: "<WHMCS Root Directory>/includes/wrapper"