a que se puede deber este error me aparecen 140 errores :S <code>ERROR Error: "Uncaught (in promise): Error: No value accessor for form c...

a que se puede deber este error me aparecen 140 errores :S

ERROR Error: "Uncaught (in promise): Error: No value accessor for form control with name: 'icon'
_throwError@http://localhost:4200/vendor.bundle.js:92908:11
setUpControl@http://localhost:4200/vendor.bundle.js:92818:9
../../../forms/@angular/forms.es5.js/NgForm.prototype.addControl/<@http://localhost:4200/vendor.bundle.js:94945:13
../../../../zone.js/dist/zone.js/</</ZoneDelegate.prototype.invoke@http://localhost:4200/polyfills.bundle.js:2937:17
onInvoke@http://localhost:4200/vendor.bundle.js:79980:24
../../../../zone.js/dist/zone.js/</</ZoneDelegate.prototype.invoke@http://localhost:4200/polyfills.bundle.js:2936:17
../../../../zone.js/dist/zone.js/</</Zone.prototype.run@http://localhost:4200/polyfills.bundle.js:2687:24
scheduleResolveOrReject/<@http://localhost:4200/polyfills.bundle.js:3389:52
../../../../zone.js/dist/zone.js/</</ZoneDelegate.prototype.invokeTask@http://localhost:4200/polyfills.bundle.js:2970:17
onInvokeTask@http://localhost:4200/vendor.bundle.js:79971:24
../../../../zone.js/dist/zone.js/</</ZoneDelegate.prototype.invokeTask@http://localhost:4200/polyfills.bundle.js:2969:17
../../../../zone.js/dist/zone.js/</</Zone.prototype.runTask@http://localhost:4200/polyfills.bundle.js:2737:28
drainMicroTaskQueue@http://localhost:4200/polyfills.bundle.js:3147:25
../../../../zone.js/dist/zone.js/</</ZoneTask.invokeTask@http://localhost:4200/polyfills.bundle.js:3048:21
invokeTask@http://localhost:4200/polyfills.bundle.js:3972:9
globalZoneAwareCallback@http://localhost:4200/polyfills.bundle.js:3990:17
"
resolvePromisehttp://localhost:4200/polyfills.bundle.js:3340:31scheduleResolveOrRejecthttp://localhost:4200/polyfills.bundle.js:3392:17invokeTaskhttp://localhost:4200/polyfills.bundle.js:2970:17onInvokeTaskhttp://localhost:4200/vendor.bundle.js:79971:24invokeTaskhttp://localhost:4200/polyfills.bundle.js:2969:17runTaskhttp://localhost:4200/polyfills.bundle.js:2737:28drainMicroTaskQueuehttp://localhost:4200/polyfills.bundle.js:3147:25invokeTaskhttp://localhost:4200/polyfills.bundle.js:3048:21invokeTaskhttp://localhost:4200/polyfills.bundle.js:3972:9globalZoneAwareCallbackhttp://localhost:4200/polyfills.bundle.js:3990:17 ```