Hi @dkleber89,
You can find the tests that are being run for this challenge in this markdown file. The tests are looking at your server.js file and trying to match two regular expressions:
assert.match(data, /require\s*\(('|")\.\/routes(\.js)?\1\)/gi, 'You should have required your new files');
assert.match(data, /mongo.connect[^]*routes/gi, 'Your new modules should be called after your connection to the database');
The second assertion is looking for mongo.connect, and you have called your client called client instead of mongo. I think that might be the problem.