Hello Tyrannocaster,
can you reboot and then try again.
I remember trying a variety of things when I had this issue once and this was what solved it in the end.
I have not had the problem since or needed to reboot due to it.
Some of what I had read at the time said it could be mounting issues like not unmounting and ejecting (which was not what I'd done), or that files were still transferring when I unmounted ejected, this could be the case.
The other one I read was about the trash on the usb stick, it said it can occur in Nautilus (and also in Dolphin) if the trash can has files moved to trash that are not deleted, and to hold down the Ctrl key and press h to show the hidden files in the trash can of usb stick and delete them before unmounting or ejecting.
I have since then removed usb sticks and not emptied the trash can 1 time, (yesterday) and the error didn't reoccur, so I am unsure if that was the cause the previous time and if it can be an intermittent or random error/cause, not happening every time, or if it was unrelated to the cause.
can you reboot and then try again.
I remember trying a variety of things when I had this issue once and this was what solved it in the end.
I have not had the problem since or needed to reboot due to it.
Some of what I had read at the time said it could be mounting issues like not unmounting and ejecting (which was not what I'd done), or that files were still transferring when I unmounted ejected, this could be the case.
The other one I read was about the trash on the usb stick, it said it can occur in Nautilus (and also in Dolphin) if the trash can has files moved to trash that are not deleted, and to hold down the Ctrl key and press h to show the hidden files in the trash can of usb stick and delete them before unmounting or ejecting.
I have since then removed usb sticks and not emptied the trash can 1 time, (yesterday) and the error didn't reoccur, so I am unsure if that was the cause the previous time and if it can be an intermittent or random error/cause, not happening every time, or if it was unrelated to the cause.