How to fix Cannot read property 'node' of undefined?

Need in an existing project to upgradeall with version 15.6.2 React to 16+. Updated react, react-dom and got this error.
5c9c719b571e2555078663.png
What's the problem? Link to the github repo. Can pay if someone were to do this, write Clinton.Windler@gmail.com
March 19th 20 at 08:57
0 answer

Find more questions by tags WebpackReact