Dependencies.dart

class HttpClient {
	//...
}

class NetworkEndpointsA {
	HttpClient client;

	NetworkEndpointsA(this.client);
}

class NetworkEndpointsB
	HttpClient client;

	NetworkEndpointsB(this.client);
}

class HomeBloc {
	NetworkEndpointsA endpointsA;
  NetworkEndpointsA endpointsB;

	HomeBloc(this.endpointsA, this.endpointsB);
}

Line 19 should read NetworkEndpointsB endpointsB; and not NetworkEndpointsA endpointsB;