Python Flask skill path

Hi, is it just me or is https://www.codecademy.com/paths/build-python-web-apps-flask/tracks/introduction-to-flask/modules/introduction-to-flask/lessons/flask-build-your-first-app somewhat buggy at the moment. Specifically when trying to resolve task 3/6 I’m getting random " Not Found" errors or syntax errors that probably shouldn’t occur?