2 Answers
when you run nodemon, please click(server running) at http://127.0.0.1:8080/ or http://127.0.0.1:8081 and check the results.
Lab directions worked well for me. No port have to be opened or changed for node.js app.
Make sure to click "Web Preview" on top right corner of Cloud Shell and not call the localhost URL (127.0.0.1) direct from browser.
do you see any useful info in the developer tools ? Are you running incognito ?
I am also getting error – Invalid App Url for [email protected]… i tried in both normal and incognito mode but same error.