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<@ULVA73B9P>, I am getting the following error when I transition from prefect=3.x back to prefect=2.x `'copy_on_model_validation' has been removed`. What is this error?

The error you're encountering, `'copy_on_model_validation' has been removed`, likely arises from differences in how Prefect 3.x and 2.x handle certain configurations or features that have been deprecated or removed. This specific error message doesn't appear directly in the Prefect 2.x documentation, but it suggests that a feature or configuration option available in Prefect 3.x is not present or has been removed in 2.x.

When transitioning between major versions, it's essential to review the <https://docs.prefect.io/latest/guides/upgrade-guide-agents-to-workers/|Prefect upgrade guide> and ensure that your code is compatible with the version you are switching to. Features deprecated in newer versions may not exist in older versions, leading to such errors.

If you have specific code snippets or configurations that are causing this issue, reviewing them against the documentation for the version you are using can help identify the root cause.