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This is a greenhouse generation issue it looks.

It seems to be something returning null from our villager.
I've tried to look at the Dynamic Surroundings source to see what exactly, but the code on the repo does not match the stacktrace.
I'll contact the author.

How odd...

Feels like more of a dynamic surroundings issue to me...

Yeah pretty sure that this is a dynamic surrounding issue to me. Please report this to them. If they disagree then I can reopen this issue and look into it further, but for now we have other things to focus on.