"Open as Layers" option grayed out/can't click in Lightroom
I've had lightroom for a short while now, but I'm completely new to Photoshop. I'm trying to open an image from lightroom as layers in photoshop, but for some reason that option is grayed out/can't be clicked when I hover my mouse over the "edit in" option. Would anyone know why this might be? I have the latest versions of both (on newest version of macOS as of today) and I have tried reinstalling both programs. It could be user error but I'm just not sure, any help would be appreciated, thanks.
