Failed post request for login in example but shows email?

[Dnguye92]

Describe the bug
While using the example listed, I get a failed post request when trying to login but I still see my email after I attempted the login?

Version
What version of next-firebase-auth are you using?
0.13.1

To Reproduce
Steps to reproduce the behavior:

1. Click on "Sign in"
2. Sign in
3. Redirects to /.
4. See error

Expected behavior
Not expecting a failed post request.

[kmjennison]

This is probably a configuration error for the Firebase settings, as the live demo app works. I recommend modifying your demo app API endpoint to log the actual error, then double-checking your Firebase email, private key, etc.