I have this same problem, did you find a solution for it?
We moved code from a 2020.10 instance to a 2020.4 and it won’t run from Orchestrator. They have a previous post about this but all it says is : The fix for this was done in the latest 20.4 patch. If you want to continue using Studio 20.10 with Orchestrator 20.4, you will need to upgrade Orchestrator to the latest patch. Alternatively you can continue to use Studio 20.4 with your current version of Orchestrator.
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