DejaDup restore fails with unknown error

[sebastian-s]

I used DejaDup to restore a backup saved to a local NAS that was mounted via SMB.

After less than 10MB DejaDup gives me the following error message:

Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1412, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1405, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1339, in main
    restore(col_stats)
  File "/usr/bin/duplicity", line 630, in restore
    restore_get_patched_rop_iter(col_stats)):
  File "/usr/lib/python2.7/dist-packages/duplicity/patchdir.py", line 522, in Write_ROPaths
    for ropath in rop_iter:
  File "/usr/lib/python2.7/dist-packages/duplicity/patchdir.py", line 495, in integrate_patch_iters
    final_ropath = patch_seq2ropath( normalize_ps( patch_seq ) )
  File "/usr/lib/python2.7/dist-packages/duplicity/patchdir.py", line 475, in patch_seq2ropath
    misc.copyfileobj( current_file, tempfp )
  File "/usr/lib/python2.7/dist-packages/duplicity/misc.py", line 166, in copyfileobj
    buf = infp.read(blocksize)
  File "/usr/lib/python2.7/dist-packages/duplicity/librsync.py", line 80, in read
    self._add_to_outbuf_once()
  File "/usr/lib/python2.7/dist-packages/duplicity/librsync.py", line 94, in _add_to_outbuf_once
    raise librsyncError(str(e))
librsyncError: librsync error 103 while in patch cycle

There was no log file at ~/.cache/deja-dup