Hi it looks like you may have a HOST env variable set somehow. This article (Fixing create-react-app when npm fails to start because your host environment variable is being set incorrectly | by David F. Choy | Medium) and this GitHub issue (How to solve when the npm start, the ip is not localhost, and can not access the view? · Issue #9619 · facebook/create-react-app · GitHub) should have more information. Let me know if this is enough to help you diagnose the problem or if things still aren’t working. Happy to help and thank you for trying Odyssey!