Error but site still runs

[supasonic]

clean clone then npm install && npm start. this code ends up in the developer console.

"Error: Invalid state ref '' B@http://localhost:9000/bower_components/angular-ui-router/release/angular-ui-router.min.js:7:23780 D/<.link@http://localhost:9000/bower_components/angular-ui-router/release/angular-ui-router.min.js:7:24122 J@http://localhost:9000/bower_components/angular/angular.min.js:53:345 f@http://localhost:9000/bower_components/angular/angular.min.js:46:399 J@http://localhost:9000/bower_components/angular/angular.min.js:53:286 f@http://localhost:9000/bower_components/angular/angular.min.js:46:399 J@http://localhost:9000/bower_components/angular/angular.min.js:53:286 C/<@http://localhost:9000/bower_components/angular/angular.min.js:59:454 r/h.success/<@http://localhost:9000/bower_components/angular/angular.min.js:70:1 ze/e/m.promise.then/u@http://localhost:9000/bower_components/angular/angular.min.js:97:271 ze/g/<.then/<@http://localhost:9000/bower_components/angular/angular.min.js:98:417 Yd/this.$get</h.prototype.$eval@http://localhost:9000/bower_components/angular/angular.min.js:108:478 Yd/this.$get</h.prototype.$digest@http://localhost:9000/bower_components/angular/angular.min.js:106:54 Yd/this.$get</h.prototype.$apply@http://localhost:9000/bower_components/angular/angular.min.js:109:285 f@http://localhost:9000/bower_components/angular/angular.min.js:71:245 F@http://localhost:9000/bower_components/angular/angular.min.js:75:408 ve/</x.onreadystatechange@http://localhost:9000/bower_components/angular/angular.min.js:76:457 " "" angular.min.js:89:231

That helped . thanks ,