I can't start it

[HERRKIN]

it complains with string proptypes on a module

[CaptainOfFlyingDutchman]

Could you please give complete error details. Console output? I'll take a look.

Which node and npm version are you using? Which OS?

[muex]

The application starts, but with an error: Uncaught TypeError: Cannot read property 'string' of undefined in Bar.js from react-d3 package