Read the statement by Michael Teeuw here.
SOLVED AUTH_AND_TEST.JS, GOOGLE SIGN IN, STUCK IN LOOP
I have been following the video on YouTube, step by step. https://www.youtube.com/watch?v=UBgH5hejYtM
I have downloaded the credentials.json, and trying to do the:
It opens the browser fine, I go to log in on the email I created the project with, but as it’s redirecting, it reloading back into the login screen…
@DrDeadlock I solved the problem. You should allow your browser to default browser.