Exercise Tracker tests not passing - APIs and Microservices Projects

Tell us what’s happening:
Everything works properly, yet the last three tests are not passing.

Your code so far

github username: kyle4real

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Challenge: Exercise Tracker

Link to the challenge:

When sending post request directly to the /api/users/:_id/exercises route (with changed :_id) there’s message “Path ‘:_id’ is required” instead of the expected response after adding exercise.