Unable to complete "Use model.findOne()" challenge

I’m unable to complete the “Use model.findOne() to Return a Single Matching Document from Your Database” challenge. I spent ~15 minutes checking myself before looking at the solution, only to see it was what I had already written. In the Repl.it (I’m using Repl.it btw) console, I see the POST request from freeCodeCamp.org, but the test fails on the freeCodeCamp challenge page. A few seconds after the test fails, the console displays [object Object], and then nothing else happens. Looking at the MongoDB database overview, I can see the database is being reached, read from, and written to, but still not solving the issue, obviously. Is this a Repl.it issue? A freeCodeCamp issue? Is this on me?