Fails when trying to use protonvpn provider

[trousev]

HTR:

0. Download qomui from repository and install for debian 10.
1. Run qomui
2. Select "ProtonVPN" as provider, enter username and password
3. Wait download to be complete.
4. Press "Add button"
5. Face following error:

Traceback (most recent call last):
  File "/usr/lib/python3.7/dist-packages/qomui/qomui_gui.py", line 2532, in save_scripts
    ret = self.save_options(temp_config)
  File "/usr/lib/python3.7/dist-packages/qomui/qomui_gui.py", line 1360, in save_options
    if temp_config["ping"] == 1:
KeyError: 'ping'

after it, application crashes.