It seems like for a while backups have stopped working, and manually starting a backup just throws out this error.

Updated to 1.0.11 as this error seemed to be identical to #15 but still occurs for some reason.

using 1.18.2 with forge 40.1.20 (i know, outdated version but it's the one that seems stable for my modpack, updating to newer ones seems to break a lot of things which would take hours upon hours of debugging due to a lot of mods not always being up to date)

I am getting this same error in DireWolf20 1.18.2 1.7.0 using FTBbackups2 1.0.11

Same, in ATM7

This has been fixed in the latest release

in 1.18.2 still happend.