'Uncaught Error: Can't resolve all parameters for' runtime error when upgrading from Angular 4 to 5.0.1

Question

This is fine in Angular 4.x, just not Angular 5.0.1. This project was generated with Angular CLI.

compiler.js:466 Uncaught Error: Can\'t resolve all paramet         


        

Answer 1

The error mentions that you're using a wron constructor for RegistrationService.