Custom AI task block is not supported by selected generator

Hey!

I'm trying to add an aitask to MCreator so I created a plugin and added a simple task that recreats follow_entity.

I got it to show up in the ai editor of my entity but when I add it to the AI task/gloals list Í get the following warning:

"Block ... is not supported by the selected generator. It will be skipped"

I selected the generator for forge 1.16.5

Any ideas what the issue could be?