Can’t Access Permalinks due to Jetpack Error

Think of server memory like a bucket that you’re filling with water. Just because Jetpack caused the bucket to overflow doesn’t necessarily mean it’s the one that filled the bucket in the first place, so let’s rule that out first.

Please attempt to disable all plugins except Jetpack, and switch to the default Twenty Nineteen theme. If the problem goes away, enable the other plugins one by one to identify the source of the problem.

If you can install plugins, install Health Check. On the troubleshooting tab, you can click the button to disable all plugins and change the theme for you, while you’re still logged in, without affecting normal visitors to your site.

It’s very possible that one plugin, or the theme, is already using far more memory than it should, so let’s rule that out first.