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I am hitting an issue when trying to unpickle and internal class object inside of a deployed prefect flow. It is raising the following error:
`Can't get attribute 'Document' on &lt;module 'prefect.engine' from '/app/.venv/lib/python3.11/site-packages/prefect/engine.py'&gt;`
This runs fine in prefect locally but not once deployed with a docker image. I am importing the `Document` class at the top of my file containing the flow. Any ideas why this might be happening?

hi <@U01Q7NUL3FG> - this is odd.

it looks like its thinking your document class is in `prefect.engine`?

can you show your import? im wondering if there is some namespace conflict

Basically this:
`from my_private_library.tools.namespace import Document`

Sorry for the late reply. Pickle was a poor choice of tool for this. We just moved to json instead and it works. Not sure what the error is but everything is working without pickle now.