Missing querystring dep in package.json

[vjpr]

EDIT: Seems this explains it:

BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to:
	- add a fallback 'resolve.fallback: { "querystring": require.resolve("querystring-es3") }'
	- install 'querystring-es3'
If you don't want to include a polyfill, you can use an empty module like this:
	resolve.fallback: { "querystring": false }