problem with deja-dup

[Heinrich Balatka <heinrich balatka gmail com>]

Hi,
I am using:
-- Ubuntu 18.10 with German language
and
-- deja-dup 38.4
snap list
Name                    Version                    Rev   Aufzeichnung  Herausgeber       Hinweise
core                    16-2.38                    6673  stable        canonical✓        core
core18                  18                         782   stable        canonical✓        base
deja-dup                38.4                       6     stable        mterry            classic

-- Error message:
Traceback (innermost last):
  File "/snap/deja-dup/6/bin/duplicity", line 1560, in <module>
    with_tempdir(main)
  File "/snap/deja-dup/6/bin/duplicity", line 1546, in with_tempdir
    fn()
  File "/snap/deja-dup/6/bin/duplicity", line 1398, in main
    do_backup(action)
  File "/snap/deja-dup/6/bin/duplicity", line 1516, in do_backup
    full_backup(col_stats)
  File "/snap/deja-dup/6/bin/duplicity", line 577, in full_backup
    globals.backend)
  File "/snap/deja-dup/6/bin/duplicity", line 459, in write_multivol
    (tdp, dest_filename, vol_num)))
  File "/snap/deja-dup/6/lib/python2.7/site-packages/duplicity/asyncscheduler.py", line 146, in schedule_task
    return self.__run_synchronously(fn, params)
  File "/snap/deja-dup/6/lib/python2.7/site-packages/duplicity/asyncscheduler.py", line 172, in __run_synchronously
    ret = fn(*params)
  File "/snap/deja-dup/6/bin/duplicity", line 458, in <lambda>
    vol_num: put(tdp, dest_filename, vol_num),
  File "/snap/deja-dup/6/bin/duplicity", line 347, in put
    backend.put(tdp, dest_filename)
  File "/snap/deja-dup/6/lib/python2.7/site-packages/duplicity/backend.py", line 395, in inner_retry
    % (n, e.__class__.__name__, util.uexc(e)))
  File "/snap/deja-dup/6/lib/python2.7/site-packages/duplicity/util.py", line 79, in uexc
    return ufn(unicode(e).encode('utf-8'))
 UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 37: ordinal not in range(128)

-- description
with the previous version of deja-dup (37.1) I had the same problem.
I found some bug reports about 37.1 and that it is fixed with 38.x.
With big hope I installed the new snap and tried again - without success.
The file wich raised the error is in one of the Firefox subdirectories but i don't know how to get the name.

Hearty Greetings from Austria
Heinrich

Heinrich Balatka
Gartenweg 15
AT-7083 Purbach am Neusiedlersee
Email: heinrich balatka gmail com
Mobil: +43 699 1815 1001