Edit in Photoshop greyout Lightroom

my lightroom and photoshop are both fully up tyo date, the same issue is happening on all 3 of my devices, all devices more than capable of running heavy software.

i want to photostack 3 images, In lightroom CC, i select 3 images and i try to right click them and select 'edit in photoshop' so i can focus stack and merge them into an image

edit in photoshop is greyed out, i ahev tried all fixes on the ingternet but i cant seem to get it to work

Please help if you can

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