Hey there - does anyone know the minimum version of cloudpickle required for prefect? I suspect I have a version mismatch, as am getting

unsupported pickle protocol: 5

as an error on deserializing a flow inside an image that has

cloudpickle==1.2.2

in it. FWIW it serialized fine from inside the same image.

Hi @Matt Wong-Kemp prefect has the requirements of cloudpickle set to

cloudpickle >=0.6.0

. This is definitely a mismatch issue! Is there a chance you could also check your local version of cloudpickle? Follow up: are you serializing your flow locally on the same python version that your container is running? I feel like I have seen this issue when my container has a newer python version as compared to my local machine 🤔

so that's what I was thinking, but I wasn't seeing that. Trying to sort out some deeper issues with the execution right now (I got that by manually running a kubernetes job with the right permissions) but will dig more.