Sign in callback timeout in production

[allenaxie]

I'm using NextAuth with Google as the provider for users to login for my application. During development on localhost:3000, I have no issues logging in. However, when I try to login as a user after deploying on Vercel, I get the following error:

So, I checked the function logs as suggested and I see that it timed out during a GET request to /api/auth/callback/google...

I've checked my redirect URI's in Google Cloud Console.

If this helps at all, here are pictures of Network tab of the GET requests during development(1st pic) vs production (2nd pic) :

I would greatly appreciate any help or feedback!