vscode error when attempting to debug cloned extension

So, I want to develop an extension for VS code, so I clone the repository, install node and npm, and

npm install -g yo generator-code webpack

And then I "Launch Extension" and then:

Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema. - configuration.output.filename: A relative path is expected. However the provided value "c:\\Users\\User\\workspace\\pythonVSCode\\out\\client\\jupyter\\browser\\bundle.js" is an absolute path! Please use output.path to specify absolute path and output.filename for the file name. - configuration.resolve has an unknown property 'extension'. These properties are valid: object { alias?, aliasFields?, cachePredicate?, descriptionFiles?, enforceExtension?, enforceModuleExtension?, extensions?, fileSystem?, mainFields?, mainFiles?, moduleExtensions?, modules?, plugins?, resolver?, symlinks?, unsafeCache?, useSyncFileSystemCalls? }

What is going on here? Why is the extension not building?

via xaav