CSHARP

unity c# log an error or warning

using UnityEngine;
using System.Collections;

public class MyGameClass : MonoBehaviour
{
    void Start()
    {
       	Debug.Log("Logging Message to Console");
    	Debug.LogWarning("Logging Warning to Console");
        Debug.LogError("Logging Error to Console");
    }
}

unity error log

using UnityEngine;

public class MyGameClass : MonoBehaviour
{

    void MyGameMethod()
    {
            Debug.LogError("error message");
            Debug.Log("message");
    }
}