Your command gave too much output. After a few attempts, I modified it to this, which produced useful data:
$ for f in *.gz; do echo "--- $f ---" >>output; tar tzf $f >/dev/null 2>>output; done This confirms that your hypothesis is correct. The file with the error is duplicity-full-signatures.20211007T135951Z.sigtar.gz ** Attachment added: "output" https://bugs.launchpad.net/ubuntu/+source/duplicity/+bug/1970124/+attachment/5586031/+files/output -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1970124 Title: duplicity backup fails with obscure error message Ubuntu 22.04 To manage notifications about this bug go to: https://bugs.launchpad.net/duplicity/+bug/1970124/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs