i have many error please help me

Unity Engine
1

i have many errors in my code that i will list bellow with the code please help me:

Assets\scripts\RagdollDeath.cs(5,14): error CS0101: The namespace ‘’ already contains a definition for ‘RagdollDeath’

Assets\scripts\RagdollDeath.cs(13,14): error CS0111: Type ‘RagdollDeath’ already defines a member called ‘Start’ with the same parameter types

Assets\scripts\RagdollDeath.cs(33,14): error CS0111: Type ‘RagdollDeath’ already defines a member called ‘ToggleRagdoll’ with the same parameter types

Assets\RagdollDeath.cs(8,6): error CS0246: The type or namespace name ‘SerializedFieldAttribute’ could not be found (are you missing a using directive or an assembly reference?)

Assets\RagdollDeath.cs(8,6): error CS0246: The type or namespace name ‘SerializedField’ could not be found (are you missing a using directive or an assembly reference?)

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

public class RagdollDeath : MonoBehaviour
{
    [Header("References")]
    [SerializeField] private Animator animator = null;

    private Rigidbody[] ragdollBodies;
    private Collider[] ragdollColloders;

private void Start()
{
    ragdollBodies = GetComponentsInChildren<Rigidbody>();
    ragdollColliders = GetComponentsInChildren<Collider>();

    ToggleRagdoll(False);

    Invoke(nameof(Die), 5f);
}

private void Die()
{
    ToggleRagdoll(true);

    foreach(Rigidbody rb in ragdollBodies)
    {
        rb.AddExplosionForce(107f, new Vector3(-1f, 0.5f, -1f), 5f, 0f, ForceMode.Impulse);
    }
}

private void ToggleRagdoll(bool state)
{
    animator.enabled = !state;

    foreach(Rigidbody rb in ragdollBodies)
    {
        rb.isKinematic = !state;
    }

    foreach (Collider collider in ragdollColliders)
    {
        collider.enabled = state;
    }
}


}

[code]
2

Most probably you have got two or more script files with the same name “RagdollDeath.cs” . Search for all the scripts in your project if the name is duplicate.

3

now i have 2 errors:

Assets\RagdollDeath.cs(8,6): error CS0246: The type or namespace name ‘SerializedFieldAttribute’ could not be found (are you missing a using directive or an assembly reference?)

Assets\RagdollDeath.cs(8,6): error CS0246: The type or namespace name ‘SerializedField’ could not be found (are you missing a using directive or an assembly reference?)