edit

src/app/core/core.module.ts

@@ -1,9 +1,10 @@
 import { NgModule, Optional, SkipSelf } from '@angular/core';
+import { EATokenGuard } from './guards/token.guard';
 
 import { throwIfAlreadyLoaded } from './module-import-guard';
 
 @NgModule({
-  providers: []
+  providers: [EATokenGuard]
 })
 export class CoreModule {
   constructor(@Optional() @SkipSelf() parentModule: CoreModule) {