TypeError: Failed to fetch

[gocoder2020]

Just found the "TypeError: Failed to fetch" in webpage after run npm run dev.
How to handle this error in chapter-4 branch?
Thanks!

[St1ng-Ray]

though it's tooooo late, the issue occurs on line 13 of the DB.js file. The server.post() call is missing the first path parameter: '/path'. I stumbled upon this during debugging. I have no experience with Node.js development and am unsure if this is caused by a difference in dependency versions. Anyway, after fixing it, it works perfectly!