first version of sample.component finished

src/app/error/error.component.ts

@@ -0,0 +1,17 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-error',
+  templateUrl: './error.component.html',
+  styleUrls: ['./error.component.scss']
+})
+export class ErrorComponent implements OnInit {
+
+  message = '';
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}