Login token issue, how to handle this?

I’ve encountered a rare scenario where I go to my app’s dashboard and I see this error in the console:

Error: Error logging in with token: Error: You’ve been logged out by the server. Please log in again. [403] (reporters.js, line 67)

And my page fails to redirect to the login page so the user is basically presented with a blank page which is no good. What is this and how do I properly handle it?