I can t find an environment variable in my flow run The erro

Question

I can t find an environment variable in my flow run The error includes a message `This may be due to one of the following version mismatches between the flow build and execution environments n python flow built with 3 7 13 currently running with 3 7 12 ` The CI CD system registering my flow I guess is using python 3 7 13 But how do I know what the execution environment python is if it s executing from a docker image in a prefect docker agent

Kevin Kho · Answer

You can exec into the base image and check I think I actually suspect this is a `cloudpickle` version issue more than python version So check Prefect and cloudpickle versions

Josh · Answer

Yeah the logs do also mention the error occurred while unpickling the flow

Josh · Answer

How do I check the `cloudpickle` version

Josh · Answer

the base image s python version is 3 7 12

Kevin Kho · Answer

Maybe `pip show cloudpickle` inside the base image

Josh · Answer

```pip show cloudpickle Name cloudpickle Version 1 6 0 Summary Extended pickling support for Python objects Home page Author Cloudpipe Author email License BSD 3 Clause License Location usr local lib python3 7 site packages Requires Required by dask distributed gym mlflow prefect shap```

Josh · Answer

that s a version from August 25 2020 there s since been a 2 0 0 release and a 2 1 0 release Would that cause an issue

Kevin Kho · Answer

It would if your registration was on the 2 0 or 2 1

Josh · Answer

I guess that is theoretically possible but I m pinning my dependencies so I did not think that would happen

Kevin Kho · Answer

How about agent cloudpickle version

Josh · Answer

how do I check the agent cloudpickle version

Kevin Kho · Answer

Same thing in the same box environment as the agent `pip show cloudpickle`

Josh · Answer

you mean on the host

Kevin Kho · Answer

Yes

Josh · Answer

ah I m running python 3 8 on the host where the prefect agent is running and `pip show cloudpickle` on the VM host showed 2 0 0

Josh · Answer

I ll try installing 1 6 0 on the box and rerunning

Josh · Answer

still the same issue Would i have to install python 3 7 12 on the host

Kevin Kho · Answer

Normally within the minor version is ok so i d be surprised but it s worth trying

Josh · Answer

ah was cloudpickle + user error on path of what was in the image vs on host

Josh · Answer

thanks for helping

Kevin Kho · Answer

Ah ok Nice