ERROR: user-callback returned 'Traceback (most recent call last):


 "/home/user/.config/backintime/user-callback", line 17, in <module>

from plyer import tts
ModuleNotFoundError: No module named 'plyer''

Traceback (most recent call last):


 "/usr/local/bin/protonvpn", line 5, in <module>

from protonvpn_cli.cli import main


 "/usr/local/lib/python3.9/dist-packages/protonvpn_cli/cli.py", line 57, in <module>

from . import connection


 "/usr/local/lib/python3.9/dist-packages/protonvpn_cli/connection.py", line 16, in <module>

from .utils import (


 "/usr/local/lib/python3.9/dist-packages/protonvpn_cli/utils.py", line 13, in <module>

import requests


 "/usr/lib/python3/dist-packages/requests/__init__.py", line 120, in <module>

from . import utils


 "/usr/lib/python3/dist-packages/requests/utils.py", line 25, in <module>

from . import certs


 "/usr/lib/python3/dist-packages/requests/certs.py", line 15, in <module>

from certifi import where
ModuleNotFoundError: No module named 'certifi'
