AttributeError: '_io.BufferedReader' object has no attribute 'uc_name'

[Mac]

Distribution: Ubuntu 19.10
AttributeError: '_io.BufferedReader' object has no attribute 'uc_name'

deja-dup 40.1-1ubuntu2
duplicity 0.8.04-2ubuntu1

DUPLICITY: ERROR 30 AttributeError
DUPLICITY: . Traceback (innermost last):
DUPLICITY: . File "/usr/bin/duplicity", line 107, in <module>
DUPLICITY: . with_tempdir(main)
DUPLICITY: . File "/usr/bin/duplicity", line 93, in with_tempdir
DUPLICITY: . fn()
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/dup_main.py", line
 1535, in main
DUPLICITY: . do_backup(action)
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/dup_main.py", line
 1671, in do_backup
DUPLICITY: . incremental_backup(sig_chain)
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/dup_main.py", line
 661, in incremental_backup
DUPLICITY: . globals.backend)
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/dup_main.py", line
 424, in write_multivol
DUPLICITY: . at_end = gpg.GzipWriteFile(tarblock_iter, tdp.name, globals.vol
size)
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/gpg.py", line 454,
 in GzipWriteFile
DUPLICITY: . new_block = next(block_iter)
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/diffdir.py", line
542, in __next__
DUPLICITY: . result = self.process(next(self.input_iter)) # pylint: disable
=assignment-from-no-return
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/diffdir.py", line
680, in process
DUPLICITY: . data, last_block = self.get_data_block(fp)
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/diffdir.py", line
707, in get_data_block
DUPLICITY: . buf = fp.read(read_size)
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/diffdir.py", line
449, in read
DUPLICITY: . buf = self.infile.read(length)
DUPLICITY: . File "/usr/lib/python3/dist-packages/duplicity/diffdir.py", line
417, in read
DUPLICITY: . log.Warn(_(u"Error %s getting delta for %s") % (str(ex), self.i
nfile.uc_name))
DUPLICITY: . AttributeError: '_io.BufferedReader' object has no attribute 'uc_n
ame'

[Mac (andrew-xiion)]

I found this link https://bugs.launchpad.net/duplicity/+bug/1852876 which suggests a duplicity issue. I've also tried the later snap version of deja-dup and it also fails.