it says method must have a return help

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

public class Enemy : MonoBehaviour
{
public Transform player;
private Rigidbody2D rb;
public float moveSpeed = 5;
private Vector2 movement;
public GameObject other;


// Start is called before the first frame update
void Start()
{
rb = this.GetComponent<Rigidbody2D>();
}

// Update is called once per frame
void Update()
{
Vector3 direction = player.position - transform.position;
float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg - 90f;
rb.rotation = angle;
direction.Normalize();
movement = direction;
}
private void FixedUpdate() {
moveCharacter(movement);
}
void moveCharacter(Vector2 direction){
rb.MovePosition((Vector2)transform.position + (direction * moveSpeed * Time.deltaTime));
}
OnCollisionEnter2D(Collision collision)
{
Destroy(GetComponent<MeshRenderer>());
}
}

 

It's right, you haven't declared the return type of OnCollisionEnter2D. It should be void.

And please use the Insert Code button in the editing toolbar when you want to insert some code into a forum message. Otherwise it's almost unreadable.