StartCoroutine & WaitForSeconds Error

Questions & Answers
1

I’m currently working on a clicker game but when ever I try and use a StartCoroutine for my autoticker it gives me the following two errors:

1: Assets/Scripts/GoldPerSec.cs(12,17): error CS1502: The best overloaded method match for UnityEngine.MonoBehaviour.StartCoroutine(System.Collections.IEnumerator) has some invalid arguments

2: Assets/Scripts/GoldPerSec.cs(12,17): error CS1503: Argument #1 cannot convert System.Collections.IEnumerable expression to type `System.Collections.IEnumerator’

using UnityEngine;
using System.Collections;

public class GoldPerSec : MonoBehaviour {

	public UnityEngine.UI.Text gpsDisplay;
	public Click click;
	public ItemManager[] items;

	// Use this for initialization
	void Start () {
		StartCoroutine(AutoTick());
	}
	
	// Update is called once per frame
	void Update () {
		gpsDisplay.text = GetGoldPerSec() + " gold/sec";
		
	}

	public int GetGoldPerSec(){
		int tick = 0;
		foreach(ItemManager item in items){
			tick += item.count * item.tickValue;
		}
		return tick;
	}

	public void AutoGoldPerSec(){
		click.gold += GetGoldPerSec();
	}

	IEnumerable AutoTick(){
		while(true){
			AutoGoldPerSec();
			yield return new WaitForSeconds(1);
		}
	}
}
2

According to the StartCoroutine documentation, your Coroutine function should be returning IEnumerator, not IEnumerable. The error message is telling you that exact thing - it’s trying to convert the IEnumerable that you’re returning into an IEnumerator that StartCoroutine expects, and it can’t do it because it’s not a valid typecast.