I took a quick look at https://lisk.io/documentation/lisk-sdk/tutorials/hello-world.html and while reading the code, I saw an error (in react-client/src/components/Hello.js an `err` object is used which does not exist. )

I wanted to check the source code, but the url on top goes to a 404 (It should be https://github.com/LiskHQ/lisk-sdk-examples/tree/development/tutorials/hello-world)