Mail For Good - Internal Server Error when logging in the first time

Hi everyone,

I’ve been following instructions on how to deploy Mail For Good on AWS and I’ve successfully achieved so it appears.

Issue occurs where on login screen I see “Sign in with Google” but when I try and do so I get “Internal Server Error”.

Setting up doc suggest I should connect first time using default admin account: “admin@admin.com” and password “admin”.
Since I only see “Sign in with Google” button, I am not sure how would I log in using the default admin account.
Anyone can help me out to resolve this?
Thank you!
Milos