I updated my Membership plugin to the latest version, but now my site won't load - I get a serv

It could be the membership plugin or the dashboard plugin that cause the error. Here's the text: The website encountered an error while retrieving http://makedinnerrule.azurewebsites.net/wp-admin/admin.php?page=wpmudev-updates. It may be down for maintenance or configured incorrectly.
Error code: 500