The location of snap-codelabs-code has been moved to https://github.com/ubuntu in github

[ch181]

In the tutorial (http://localhost:8123/codelabs/build-a-nodejs-service#1), it is still stated to grab the nodejs app from "https://github.com/ubuntu-core/snap-codelabs-code" but in fact, it should be from "https://github.com/ubuntu/snap-codelabs-code"

[didrocks]

Oh, good catch! Just fixed it in the source. I'll close the bug when I regenerate the snap. Thanks for your contribution :)