<input name="techSpecMeta.make" [(ngModel)]="techSpecMeta.make" type="text" class="form-control border-input" placeholder="Enter car brand">

得到错误
无法读取未定义的属性’make’
    在Object.eval [作为updateDirectives]

export class UserComponent implements OnInit {
  constructor(private vahinfo: VehicleInfo) {}
  ngOnInit() {}
  techSpecMeta: {};
  onSave = function(vehicle,isValid: boolean) {
    this.vahinfo.saveVehicle(vehicle).subscribe(data => {
      console.log(data.data)
    },error => this.errorMessage = error)
  }
}