Hi, I have the same issue since my last apt upgrade. I traced it down to coreutils and mv. coreutils 8.30 uses the syscall renameat2 which fails with invalid argument, but coreutils 2.26 uses the syscall rename which works.
A workaround is to downgrade your coreutils to 2.26 (it seems that 2.28 works on ubuntu). Regards, Philippe Daouadi