u/Cute_Pollution_498

I recently just got an external ssd, I had moved my documents folder onto the new drive, but now I wish to move it back onto my main internal drive. However when I attempt to do this I keep getting this error. Does anyone know a way to fix this?

https://preview.redd.it/ify1zrpypv5h1.png?width=657&format=png&auto=webp&s=8d34fc2dc85d6741dd5b0b02018e42dd4eceb5e8