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I'm using prefect 2.3 and having trouble running a new flow. One of my tasks instantiates a class and returns it, then fails with the following error:
```cannot pickle '_thread.lock' object```
I have found some methods to get around this for v1, but I can't find anything for v2. How can I get this flow to run?

We’re working on allowing persistence of results to be disabled

In the meantime, you’d have to ensure your class is serializable. It looks like it’s got a threading.Lock attached to it?

I'm running some Selenium Firefox scripts, so webdriver must have a thread lock, yes.

<@U01CEUST9B5> Will it work if I don't return the results from a task... just use a normal method instead as a workaround?

That did work. Thanks for the help Michael! :smile: