webpack doesnt work for react. ERROR Error while parsing JSON - Unexpected end of JSON input

Question

I need to run webpack -w for React project (javascript). It worked fine, but then after trying to install a virtual environment for python on windows(not sure if this is related or coincidence), webpack stopped working. In the git terminal it throws the following errors:

1. I think the key is in terminal error 2: npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules\chokidar\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

I think its related to the operating system part of the error. Does anyone know how I can get webpack to run again? How I can get the expected OS to be correct?

terminal error for "HelloDiv" exercise package.json and webpack config for "Hello Div"