Ensure ErrorComponent imports AsyncPipe and NgIf

Standalone/src/app/pages/error/error.component.ts

@@ -1,19 +1,26 @@
+import { AsyncPipe, NgIf } from '@angular/common';
 import { Component, OnInit } from '@angular/core';
 import { Router } from '@angular/router';
 import { AuthService } from '@auth0/auth0-angular';
-import { timer } from 'rxjs';
+import { Observable, timer } from 'rxjs';
 import { takeUntil } from 'rxjs/operators';
 
 @Component({
   selector: 'app-error',
   templateUrl: './error.component.html',
-  standalone: true
+  standalone: true,
+  imports: [
+    AsyncPipe,
+    NgIf
+  ]
 })
 export class ErrorComponent implements OnInit {
 
-  public error$ = this.auth.error$;
+  public error$: Observable<Error>;
 
-  constructor(private auth: AuthService, private router: Router) {}
+  constructor(private auth: AuthService, private router: Router) {
+    this.error$ = this.auth.error$;
+  }
 
   ngOnInit() {
     timer(0).pipe(takeUntil(this.error$)).subscribe(() => {