title: Failed to load extension from: . Manifest file is missing or unreadable error when running Chromium instance with Selenium
body: <p>I use Selenium for UI tests. I want to run an instance of Chromium but when Chromium is opened I got a pop up with </p>
  
  <blockquote>
    <p>"Failed to load extension from: . Manifest file is missing or
    unreadable".</p>
  </blockquote>
  
  <p>Clicking ok closes the popup and leaves Chromium open with <code>data;.</code> in the address bar (screenshots <a href="https://ibb.co/Jj8McMC" rel="nofollow noreferrer">https://ibb.co/Jj8McMC</a> <a href="https://ibb.co/93hGkH7" rel="nofollow noreferrer">https://ibb.co/93hGkH7</a>). However I am not trying to run Chrome instance with extensions, I don't need any.</p>
  
  <pre><code>from selenium import webdriver[![enter image description here][1]][1]
  
  @pytest.fixture
  def browser(config):
      driver = webdriver.Chrome()
      driver.implicitly_wait(10)
      yield driver
      driver.quit()
  </code></pre>
  
  <p>Chromium is freshly installed from Ubuntu Software Centre and this problem does not appear when I just open the browser. Could you help? </p>
  
  <p>The error I receive from pytest is:</p>
  
  <blockquote>
    <p>E       selenium.common.exceptions.WebDriverException: Message:
    unknown error: Chrome failed to start: exited normally E<br>
    (unknown error: DevToolsActivePort file doesn't exist) E         (The
    process started from chrome location /snap/bin/chromium is no longer
    running, so ChromeDriver is assuming that Chrome has crashed.)</p>
  </blockquote>