Server error

Hello, when I go to PLUGINS > ADD I get this error, can you help me? Thanks!

Server Error
Sorry, something went terribly wrong!

0 - An exception has been thrown during the rendering of a template (“Argument 1 passed to Grav\Common\Data\Data::__construct() must be of the type array, null given, called in /home/rolo/public_html/testing/grav/system/src/Grav/Common/Plugins.php on line 125 and defined”) in “partials/plugins-list.html.twig” at line 9.

For further details please review your logs/ folder, or enable displaying of errors in your system configuration.

Probably having trouble accessing the GPM information from the Grav server. Can you double check you have all the PHP and Server requirements: