Simple 0 dependency Event Bus for Unity C#

EventManager.cs

using System;
using UnityEngine;
using System.Collections.Generic;

public static class EventManager<T>
{
    private static readonly List<Action<T>> _listeners = new List<Action<T>>(8);

    public static void AddListener(Action<T> handler)
    {
        if (!_listeners.Contains(handler))
            _listeners.Add(handler);
    }

    public static void RemoveListener(Action<T> handler)
    {
        _listeners.Remove(handler);
    }

    public static void RemoveAllListeners() => _listeners.Clear();

    public static void Invoke(T arg)
    {
        for (int i = 0; i < _listeners.Count; i++)
        {
            try
            {
                _listeners[i](arg);
            }
            catch (Exception ex)
            {
                Debug.LogError(
                    $"[EventManager<{typeof(T).Name}>] Listener threw an exception: {ex}");
            }
        }
    }
}