[Bug] Message: Bad Gateway

[Fireond]

Describe the bug When running :JupyniumStartAndAttachToServerInTerminal it outputs

jupynium.pynvim_helpers:   18 - INFO - nvim addr: /run/user/1000/nvim.18427.0
jupynium.pynvim_helpers:   37 - INFO - nvim attached
jupynium.pynvim_helpers:   41 - INFO - Initialising..
jupynium.pynvim_helpers:   42 - INFO - Communicating with channel_id 5
jupynium.cmds.jupynium:  103 - INFO - Using firefox profile: None
jupynium.cmds.jupynium:  620 - ERROR - Exception occurred
Traceback (most recent call last):
  File "/home/fireond/pyenv/qldpc/lib/python3.13/site-packages/jupynium/cmds/jupynium.py", line 523, in main
    with webdriver_firefox(
         ~~~~~~~~~~~~~~~~~^
        args.firefox_profiles_ini_path, args.firefox_profile_name
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ) as driver:
    ^
  File "/home/fireond/pyenv/qldpc/lib/python3.13/site-packages/jupynium/cmds/jupynium.py", line 112, in webdriver_firefox
    return webdriver.Firefox(options=options, service=service)
           ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/fireond/pyenv/qldpc/lib/python3.13/site-packages/selenium/webdriver/firefox/webdriver.py", line 72, in __init__
    super().__init__(command_executor=executor, options=options)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/fireond/pyenv/qldpc/lib/python3.13/site-packages/selenium/webdriver/remote/webdriver.py", line 261, in __init__
    self.start_session(capabilities)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
  File "/home/fireond/pyenv/qldpc/lib/python3.13/site-packages/selenium/webdriver/remote/webdriver.py", line 362, in start_session
    response = self.execute(Command.NEW_SESSION, caps)["value"]
               ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/fireond/pyenv/qldpc/lib/python3.13/site-packages/selenium/webdriver/remote/webdriver.py", line 454, in execute
    self.error_handler.check_response(response)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "/home/fireond/pyenv/qldpc/lib/python3.13/site-packages/selenium/webdriver/remote/errorhandler.py", line 196, in check_response
    raise exception_class(value)
selenium.common.exceptions.WebDriverException: Message: Bad Gateway

I thought it was the problem with selenium. So I tried the following test code, and the outputs are the same.

from selenium import webdriver
from selenium.webdriver.firefox.service import Service
from selenium.webdriver.firefox.options import Options

options = Options()
driver = webdriver.Firefox(options=options)
driver.get("https://example.com")
print(driver.title)
driver.quit()

Output of jupynium --version

Jupynium v0.2.6+4.g144ab6e

Output of nvim --version

NVIM v0.12.0-dev-888+g95dfb063da
Build type: Release
LuaJIT 2.1.1748459687
Run "nvim -V1 -v" for more info

Additional context Add any other context about the problem here.

[kiyoon]

If you installed firefox with snap on Ubuntu, make sure you remove it and try the ppa version.

I asked ChatGPT and maybe this could work: unset http_proxy https_proxy HTTP_PROXY HTTPS_PROXY

But I really can't help you with the Selenium problem. It depends on the OS and environment. But if you figure out the solution, sharing here is quite helpful.