Animator.isInitialized

Description

Returns whether the animator is initialized successfully.

See Animator.Rebind to manually initialize the animator.

using UnityEngine;

public class CheckAndRebind : MonoBehaviour
{
    Animator animator;

    void Start()
    {
        animator = GetComponent<Animator>();

        if (!animator.isInitialized)
            animator.Rebind();
    }
}