Can I get a user token for testing?

I’m trying to update a web API to use tokens from Auth0 for authorization. I don’t have access to the client application. Is there a place I can login as the test user on this application from the dashboard?

I don’t know if this helps, but the universal login page says I should be able to login at, but I get an error message. This probably has to do with the docs/universal-login page where it says:

If you redirect users to the /login page directly, they will get a error unless they have configured the default login route. You should always redirect users to the proper authorization request endpoint (e.g. /authorize if you are using OpenID Connect).

But I’m not redirecting from anywhere or to anywhere. I’m just trying to get a token for my user. How do I do it?