Invalid user authorisation after a period

Whats the exact body response?

What is the request you are making?

If you call /users with no ID/Login then it will return the user for the token specified.

So if you are only using user tokens and getting the wrong user to your /users call, sounds like you are mis handling your user tokens and getting cross talk between your processes as the script is using the wrong user token.

Sounds like someone else is logging into your app and the keys being loaded into the wrong bot/script