UnicodeDecodeError when restore

[Joilence]

mackup config (using github to backup the directory)

[configuration_files]

[storage]
engine = file_system
path = localcode
directory = Linux-Config-Backup

[applications_to_sync]
tmux
vim
zsh
ssh

Using Python 3.6 and installing mackup via pip on both system.

Backup on macOS 10.13.5

Succeed.

Restore on Ubuntu 16.04

Failed.

$ mackup restore
Traceback (most recent call last):
  File "/root/miniconda3/bin/mackup", line 11, in <module>
    sys.exit(main())
  File "/root/miniconda3/lib/python3.6/site-packages/mackup/main.py", line 65, in main
    app_db = ApplicationsDatabase()
  File "/root/miniconda3/lib/python3.6/site-packages/mackup/appsdb.py", line 34, in __init__
    if config.read(config_file):
  File "/root/miniconda3/lib/python3.6/configparser.py", line 697, in read
    self._read(fp, filename)
  File "/root/miniconda3/lib/python3.6/configparser.py", line 1015, in _read
    for lineno, line in enumerate(fp, start=1):
  File "/root/miniconda3/lib/python3.6/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 82: ordinal not in range(128)

Other issue seems to be related with py2.7 instead of 3.6.
What should I do to fix this?