Internal Server Error

When I run this command:

(base) fabric@jupyter-288b057c-2d2837-2d4f2e-2d9055-2dcd910df7a8b1:~/work$ fabric-cli configure setup
Config directory: /home/fabric/work/fabric_config
Existing token at /home/fabric/work/fabric_config/id_token.json is expired, will refresh…
Refreshing token…
Refresh failed, creating new token…
Creating token…

Please open this URL in your browser to authenticate:

https://cm.fabric-testbed.net/credmgr/tokens/create_cli?scope=all&lifetime=4&comment=Create+Token+via+CLI+configure&redirect_uri=http%3A%2F%2Flocalhost%3A38013%2Fcallback&project_id=83b7a00c-fd23-43e7-82fa-af68411d270f

Waiting for authentication (timeout: 300s)…
Press Ctrl+C to enter the authorization code manually.

I get this error message when I open the url in my browser: 

{“errors”:[{“message”:”Internal Server Error”,”details”:”An internal error occurred. Please try again or contact support.”}],”type”:”error”,”size”:1,”status”:500}

How do I go about this?