TypeError: cannot unpack non-iterable NoneType object

[irrisolto]

Hi, i have this code:

async def get_MYSITE_browser_data(user_agent=None):
    browser = await uc.start(headless=True,browser_args=["--user-agent="+user_agent if user_agent else ""])
    page = await browser.get('MYSITE')
    await page.wait(2)
    cookies = {cookie.name: cookie.value for cookie in (await browser.cookies.get_all())}

    return {
        "cookies": cookies,
        "user_agent": user_agent
    }

When i'm running it on my desktop it works fine but on my raspberry pi 3b i get this error

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
    return runner.run(main)
           ^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/asyncio/base_events.py", line 653, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "<stdin>", line 1, in main
  File "/root/project/myproject.py", line 8, in get_x_data_browser
    browser = await uc.start(headless=True,browser_args=["--user-agent="+user_agent if user_agent else "","--headless=new"])
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/nodriver/core/util.py", line 95, in start
    return await Browser.create(config)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/nodriver/core/browser.py", line 90, in create
    await instance.start()
  File "/usr/local/lib/python3.11/dist-packages/nodriver/core/browser.py", line 393, in start
    await self.connection.send(cdp.target.set_discover_targets(discover=True))
  File "/usr/local/lib/python3.11/dist-packages/nodriver/core/connection.py", line 413, in send
    await self._prepare_headless()
  File "/usr/local/lib/python3.11/dist-packages/nodriver/core/connection.py", line 492, in _prepare_headless
    response, error = await self._send_oneshot(
    ^^^^^^^^^^^^^^^
TypeError: cannot unpack non-iterable NoneType object

Do you know what it could be? I'm using chromium installed via APT

Thanks in advance