Unable to serve the cloned repository on local host so as to make changes

[sunday-ucheawaji]

Describe the bug
I cloned the repository, installed the library and then did npm run demo to watch any change made but I get this on localhost "http://[::]:3000/". If i go to localhost:3000, I get another error, this error
Not Found / 404
You may be seeing this error due to misconfigured options.
Please see this FAQ question for information on possible causes and remedies.

I get this in the browser console
VM117:5 crbug/1173575, non-JS module files deprecated.

Static Paths
C:\Users\sunda\Documents\react-dropdown-tree-select

To Reproduce
git clone library
npm install
npm run demo

Environment (please complete the following information):

• Browser [e.g. chrome v60.12.0, safari 10.1]
• OS: [e.g. iOS, Windows x64] (if applicable)
• node version (if applicable)
• yarn or npm version (if applicable)

Additional context
Add any other context about the problem here.

[mrchief]

I'm not sure what's going on with your local setup but you can try passing --host to webpack-serve