Angular failed to bind the data of the main component to the data of the child component

failed to bind the data of the main component to the data of the child component

related codes

compiler.js:2547 Uncaught Error: Template parse errors:
Can"t bind to "readed" since it isn"t a known property of "app-readme".
Feb.24,2022

Don't you use Input to bind data to subcomponents?

// 
export class AppComponent {
  title = "MBTI-16";
  isRead:boolean = false;
  gameStart:boolean = false;
}
// 
export class ReadmeComponent implements OnInit {
  readMeClass:string = "";  
  @Input() readed:boolean;

  constructor() { }

  ngOnInit() {
  }
}
The problem with

is that the component does not introduce the @ Input module and does not add @ Input to the mapped attributes. The problem is that the component does not introduce the @ Input module and does not add @ Input

to the mapped attributes.
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