Have you installed the latest DNN version?

You can check your DNN version via the "Host Memu", then "Host Settings" and tick the "Check For Upgrades" check box to see the latest version

❌ Figure: Bad example - A new version is available, DotNetNuke needs to be upgraded

✅ Figure: Good example - Latest version is now installed

It would be nice if DNN version can be checked by Better way of checking DotNetNuke version on 'DotNetNuke Suggestions'.