Error in Webpack when I try to start app.

[SethKitchen]

I followed directions to start app. When I do npm start I get:

ERROR in Error encountered resolving symbol values statically. Calling function 'InjectionToken', function calls are not supported. Consider replacing the function or lambda with a reference to an exported function, resolving symbol BREAKPOINTS in /Desktop/angular2-firebase-material-demo-master/node_modules/@angular/flex-layout/media-query/breakpoints/break-points-token.d.ts, resolving symbol DEFAULT_BREAKPOINTS_PROVIDER in /Desktop/angular2-firebase-material-demo-master/node_modules/@angular/flex-layout/media-query/breakpoints/break-points-provider.d.ts, resolving symbol FlexLayoutModule in /Desktop/angular2-firebase-material-demo-master/node_modules/@angular/flex-layout/flexbox/_module.d.ts, resolving symbol FlexLayoutModule in /Desktop/angular2-firebase-material-demo-master/node_modules/@angular/flex-layout/flexbox/_module.d.ts
webpack: Failed to compile.

[Hajogg]

I hade the same issue. I updated in packe.json the flex layout version to
"2.0.0-rc.1"
That worked