Create and Save a Record of a Model err

Tell us what’s happening:
When I submit the challenge, it fails with an error of “Test timed out” ,and the console on repl.it says “could not connect with ip”, yet in my Mongo I set the ip to 0.0.0.0/0. What could be the problem?
Your project link(s)

solution: https://boilerplate-mongomongoose.nicholasmukuha.repl.co

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Challenge: Create and Save a Record of a Model

Link to the challenge: