Angular - 从数组中获取的麻烦

so in my angular project, I've been instructed to make selectedEmployee: EmpInfo type and set the [value] of the select to emp and then use selectedEmployee as the object that I reference to display the data. I'm really new to Angular and not quite sure how to implement that. I thought that I did it right but in the browser, I'm getting an error that says "cannot read property 'EmpKey' of undefined in tracker.component.ts. I'm really stuck, any help is greatly appreciated. Thanks!so in my angular project, I've been instructed