Angular - How to fix 'property does not exist on type' error?

Question

I am following this video tutorial (text version of the same). I have followed exactly the same code and I am receiving this error:

error TS2339: Prop

Answer 1

If all things mentioned above checked, check

constructor(private _employeeService: EmployeeService) { }

private, the access specifier is there. The same issue will occur when access specifier missed.