'CartPoleEnv' object has no attribute 'destroy'

The error message "'CartPoleEnv' object has no attribute 'destroy'" indicates that the `CartPoleEnv` object you are working with does not have a method or attribute named 'destroy'.

It's important to note that the `CartPoleEnv` class in the OpenAI Gym library does not have a 'destroy' method or attribute. If you are trying to clean up or close the environment, you can use the `close()` method instead. Here's an example:

import gym

env = gym.make('CartPole-v1')

# Use the environment

env.close()  # Close the environment

In this example, `close()` is called on the `env` object to properly close and clean up the environment.

If you are using a custom implementation of `CartPoleEnv` or a different library, please provide more context or code so that I can assist you better.