Question OnActionReceived(float[])': no suitable method found to override

I have met these problems when editing script:
error CS0115: 'JuggleAgent.OnEpsiodeBegin()': no suitable method found to override

I use unity v2021, ml-agent 2.3.0, python 3.9

And following is code
using UnityEngine;
using Unity.MLAgents;
using Unity.MLAgents.Sensors;
using UnityEditor.AnimatedValues;
using Unity.MLAgents.Actuators;
public class JuggleAgent: Agent
{
public Rigidbody ball;
Rigidbody player;
public float speed = 30.0f;
float diff = 0.0f;
float previousDiff = 0.0f;
float previousY = 5.0f;
bool collied = false;

public override void OnActionReceived(ActionBuffers vectorAction)
{
Vector3 controlSignal = Vector3.zero;
print("vectorAction");
//controlSignal.x = vectorAction[0];
//controlSignal.z = vectorAction[1];
//if (player.transform.localPosition.y == 1.0f)
//{
// controlSignal.y = vectorAction[2] *10.0f;
//}
player.AddForce(controlSignal * speed);
diff = ball.transform.localPosition.y - previousY;
if(diff > 0 && previousDiff < 0 && collied)
{
AddReward(0.1f);
}
collied = false;
previousDiff = diff;
previousY = ball.transform.localPosition.y;
if (ball.transform.localPosition.y < 1.5f ||
Mathf.Abs(ball.transform.localPosition.x) > 10.0f ||
Mathf.Abs(ball.transform.localPosition.z) > 10.0f)
{
EndEpisode();
}
}
private void OnCollisionEnter(Collision collision)
{
if(collision.rigidbody == ball)
{
collied = true;
}
}
public override void OnEpsiodeBegin()
{
ball.transform.localPosition = new Vector3(Random.value * 10 - 5, 5.0f, Random.value * 10 - 5);
ball.velocity = Vector3.zero;
ball.rotation = Quaternion.Euler(Vector3.zero);
ball.angularVelocity = Vector3.zero;
player.transform.localPosition = Vector3.up;
player.velocity = Vector3.zero;
player.rotation = Quaternion.Euler(Vector3.zero);
player.angularVelocity = Vector3.zero;
diff = 0.0f;
previousDiff = 0.0f;
previousY = 5.0f;
collied = false;
}
}

 

Code (CSharp):

1. OnEpsiodeBegin()

is

Code (CSharp):

1. OnEpisodeBegin()