'No provider' error (even though I've added a provider)

Question

I\'m trying to call a service from a particular class, but for some reason it can\'t be called, even though I am able to use it in other classes. I\'m using @Input

Answer 1

In my case, I imported the service as

import {MyService} from '../services/my.service'

in one place, and

import {MyService} from '../services/index'

in the other place, while index.ts contains all export statements for services in the same folder.

After I unified to the 2nd form of importing, the problem had gone.