Error while running setup for recipe prototype "request-picker-blueprint-tool" (recipe): Recipe item-product "picker-blueprint-tool" is not stackable but has a max count of 65000.

I find it(https://mods.factorio.com/mod/kry-picker-extended),It seems to have nothing to do with you, it's the reason

Minor correction: I believe this error to be at least partially caused by Transport Drones, as the data/make_request_recipes script only checks for the "not-stackable" flag when checking items to make request recipes, when the "only-in-cursor" flag exists, and implies the same thing.

I've simply added the flag to fix the incompatibility from my end, but I suggest adding a check for the "only-in-cursor" flag in addition to the "not-stackable" flag