S3 Backup Error v0.53 and v0.54

I get this error when setting up S3 backup:

Something is wrong with the backup: ERROR 30 AssertionError
. Traceback (innermost last):
. File “/usr/bin/duplicity”, line 87, in
. with_tempdir(main)
. File “/usr/bin/duplicity”, line 70, in with_tempdir
. fn()
. File “/usr/lib/python3/dist-packages/duplicity/dup_main.py”, line 1553, in main
. do_backup(action)
. File “/usr/lib/python3/dist-packages/duplicity/dup_main.py”, line 1575, in do_backup
. action).set_values()
. File “/usr/lib/python3/dist-packages/duplicity/dup_collections.py”, line 756, in set_values
. backup_chains)
. File “/usr/lib/python3/dist-packages/duplicity/dup_collections.py”, line 769, in set_matched_chain_pair
. sig_chains = sig_chains and self.get_sorted_chains(sig_chains)
. File “/usr/lib/python3/dist-packages/duplicity/dup_collections.py”, line 986, in get_sorted_chains
. assert len(chain_list) == 2
. AssertionError

Have you searched around the forums and the GitHub? This could be related to a known bug, but because I currently don’t use this option, I really haven’t tracked it.

The error seems to be related to duplicity: https://bugs.launchpad.net/duplicity/+bug/703142

In the last comment of that thread a workaround is mentioned. However, make sure to make a backup of your backup before. :slight_smile:

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