Hey guys, I'm completely new to Mac. I have a MacBook Pro 2018 running Catalina. I have connected a external 1TB Samsung SSD. I saved a photo to this drive. When I try to share the photo by dragging and dropping from the SSD to iMessage on my Mac it won't send the photo and gives me the results in the picture I've posted here… but if I drag the photo from the SSD to my desktop first it will allow me to send the photo from my desktop via iMessage. My question is why can't I send directly from the SSD? Why do I need to transfer the photo from the SSD to my desktop before iMessage will allow me to send it?