NPM Webpack install

I have been working with Javascript, Express, Karma and Jasmine, and I keep getting this NPM error , which I believe causes me problems to other parts of my testing:

└── UNMET PEER DEPENDENCY webpack@2.5.1

I tried to install latest pack, or reinstall, or even redo the express installation, but nothing. Can anyone assist me with this?

Thanks Andreas

via Andreas Karps