Implementation of Better Error Handling on Login

src/app/header/header-popup/error-box/error-box.component.ts

@@ -0,0 +1,14 @@
+import {Component, Input} from '@angular/core';
+
+@Component({
+    selector: 'app-error-box',
+    templateUrl: './error-box.component.html',
+    styleUrls: ['./error-box.component.css']
+})
+export class ErrorBoxComponent  {
+    @Input()
+        errorMessage: string|null = "Error, please try again later."
+
+    constructor() { }
+
+}