Hello
I am trying to use the code , But I am getting CORS error as well as 404

It seems if using Angular routing callback (eg silent renew) to component (SilentCallbackComponent) it will load a new app in iframe
The _authService will be a new instance and logic will not be able to apply to the original/main app.

Do you have same issue?

The only way I can get around this is handle callback using html instead of angular component.
But it mean if I want to do any logic after renew is complete, I can no long use automaticSilentRenew feature, and I have to subscribe to addAccessTokenExpiring event and do the signinSilent() myself

core.js:6210 ERROR Error: Uncaught (in promise): NullInjectorError: R3InjectorError(AppModule)[InjectionToken IUrlConstantService injection token -> InjectionToken IUrlConstantService injection token -> InjectionToken IUrlConstantService injection token]:
NullInjectorError: No provider for InjectionToken IUrlConstantService injection token!
NullInjectorError: R3InjectorError(AppModule)[InjectionToken IUrlConstantService injection token -> InjectionToken IUrlConstantService injection token -> InjectionToken IUrlConstantService injection token]:
NullInjectorError: No provider for InjectionToken IUrlConstantService injection token!
at NullInjector.get (vendor.js:29508:27)
at R3Injector.get (vendor.js:29675:33)
at R3Injector.get (vendor.js:29675:33)
at R3Injector.get (vendor.js:29675:33)
at NgModuleRef$1.get (vendor.js:43705:33)
at Object.get (vendor.js:43419:35)
at lookupTokenUsingModuleInjector (vendor.js:21795:39)
at getOrCreateInjectable (vendor.js:21907:12)
at Module.ɵɵdirectiveInject (vendor.js:33099:12)
at NodeInjectorFactory.LogoutCallbackComponent_Factory [as factory] (main.js:407:183)
at resolvePromise (polyfills.js:10606:31)
at resolvePromise (polyfills.js:10560:17)
at polyfills.js:10672:17
at ZoneDelegate.invokeTask (polyfills.js:9799:31)
at Object.onInvokeTask (vendor.js:46946:33)
at ZoneDelegate.invokeTask (polyfills.js:9798:60)
at Zone.runTask (polyfills.js:9571:47)
at drainMicroTaskQueue (polyfills.js:9975:35)
at ZoneTask.invokeTask [as invoke] (polyfills.js:9884:

Can anyone help me how to fix this?