H1_SD is the name of a MicroSD card I’m connecting, it does connect a second later, but it’s annoying to keep dismissing this error every time. I am also getting it with regular SD cards and USB Drives regardless on which USB Port I’ve connected it to, and which format it’s been partitioned too. NTFS, exfat, fat all respond similarly.

EDIT Welp, I was able to brute force a “fix”. There appeared to be an issue with the Nemo configuration between 21 and 22. Not sure what the issue was specifically, but deleting the users ~/.config/nemo and a reboot fixed it for me.