Test not passing even though code is correct and works

Tell us what’s happening:
In the lesson: Advanced Node and Express - Implementation of Social Authentication II
fCC’s tests all fail on this lesson even though the code is correct and the app behaves as expected when I do it manually. I also moved on the the next lesson (part III) which relies on this one and it passes without issues.

Your code so far

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User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36.

Challenge: Implementation of Social Authentication II

Link to the challenge: