Tengo un problema!
core.js:6014 ERROR Error: Uncaught (in promise): NullInjectorError: StaticInjectorError(AppModule)[UsersService -> AngularFirestore]:
StaticInjectorError(Platform: core)[UsersService -> AngularFirestore]:
NullInjectorError: No provider for AngularFirestore!
NullInjectorError: StaticInjectorError(AppModule)[UsersService -> AngularFirestore]:
StaticInjectorError(Platform: core)[UsersService -> AngularFirestore]:
NullInjectorError: No provider for AngularFirestore!
at NullInjector.get (core.js:855)
at resolveToken (core.js:17514)
at tryResolveToken (core.js:17440)
at StaticInjector.get (core.js:17266)
at resolveToken (core.js:17514)
at tryResolveToken (core.js:17440)
at StaticInjector.get (core.js:17266)
at resolveNgModuleDep (core.js:30393)
at _createClass (core.js:30461)
at _createProviderInstance (core.js:30426)
at resolvePromise (zone-evergreen.js:797)
at resolvePromise (zone-evergreen.js:754)
at zone-evergreen.js:858
at ZoneDelegate.invokeTask (zone-evergreen.js:391)
at Object.onInvokeTask (core.js:39680)
at ZoneDelegate.invokeTask (zone-evergreen.js:390)
at Zone.runTask (zone-evergreen.js:168)
at drainMicroTaskQueue (zone-evergreen.js:559)
at invokeTask (zone-evergreen.js:469)
at ZoneTask.invoke (zone-evergreen.js:454)
core.js:6014 ERROR Error: Uncaught (in promise): NullInjectorError: StaticInjectorError(AppModule)[UsersService -> AngularFirestore]:
StaticInjectorError(Platform: core)[UsersService -> AngularFirestore]:
NullInjectorError: No provider for AngularFirestore!
NullInjectorError: StaticInjectorError(AppModule)[UsersService -> AngularFirestore]:
StaticInjectorError(Platform: core)[UsersService -> AngularFirestore]:
NullInjectorError: No provider for AngularFirestore!
at NullInjector.get (core.js:855)
at resolveToken (core.js:17514)
at tryResolveToken (core.js:17440)
at StaticInjector.get (core.js:17266)
at resolveToken (core.js:17514)
at tryResolveToken (core.js:17440)
at StaticInjector.get (core.js:17266)
at resolveNgModuleDep (core.js:30393)
at _createClass (core.js:30461)
at _createProviderInstance (core.js:30426)
at resolvePromise (zone-evergreen.js:797)
at resolvePromise (zone-evergreen.js:754)
at zone-evergreen.js:858
at ZoneDelegate.invokeTask (zone-evergreen.js:391)
at Object.onInvokeTask (core.js:39680)
at ZoneDelegate.invokeTask (zone-evergreen.js:390)
at Zone.runTask (zone-evergreen.js:168)
at drainMicroTaskQueue (zone-evergreen.js:559)
at invokeTask (zone-evergreen.js:469)
at ZoneTask.invoke (zone-evergreen.js:454)