added OnInit

src/app/detail/detail.component.ts

@@ -1,10 +1,13 @@
-import { Component } from '@angular/core';
+import { Component, OnInit } from '@angular/core';
 
 @Component({
   selector: 'app-detail',
   templateUrl: './detail.component.html',
   styleUrls: ['./detail.component.css']
 })
-export class DetailComponent {
+export class DetailComponent implements OnInit{
+
+  ngOnInit(): void {
+  }
 
 }