Почему Selen Hub отказывается создавать сессию два раза подряд?

Question

Selenium python не может создать сессию два раза подряд. Я закрываю сессию после первого раза (см. Скрипт python ниже)

docker -compose config

version: '3.6'

services:
  hub:
    image: selenium/hub:3.141.59
    ports:
      - 4444:4444
    environment:
      - GRID_DEBUG=true
    networks:
      - selenium

  chrome:
    image: selenium/node-chrome-debug:3.141.59
    restart: always
    depends_on:
      - hub
    ports:
      # VNC port. Password: secret
      - 5901:5900
    environment:
      - HUB_HOST=hub
      - HUB_PORT_PARAM=4444
      - GRID_DEBUG=true
    networks:
      - selenium
    # https://github.com/SeleniumHQ/docker-selenium#running-the-images
    shm_size: 3G

python скрипт для проверки

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

HUB = 'http://127.0.0.1:4444/wd/hub'
URL = 'https://google.com'

if __name__ == '__main__':
    print('before create')
    driver = webdriver.Remote(HUB, {
        **DesiredCapabilities.CHROME,
        'loggingPrefs': {'driver': 'DEBUG', 'browser': 'INFO'},
    })
    print('after create')
    driver.get(URL)
    print(driver.current_url)
    driver.close()

Launch

$ docker-compose up -d
$ python web.py
before create
after create

$ python web.py
before create

... и python висит там.

Launch 2 Вот тот же вывод, но к нему добавлены некоторые запросы и ответы от python selenium webdriver.

$ docker-compose stop && docker-compose up -d
$ python web.py
before create
-- params POST http://127.0.0.1:4444/wd/hub/session {"capabilities": {"firstMatch": [{}], "alwaysMatch": {"browserName": "chrome", "platformName": "any"}}, "desiredCapabilities": {"browserName": "chrome", "version": "", "platform": "ANY", "loggingPrefs": {"driver": "DEBUG", "browser": "INFO"}}} {'Accept': 'application/json', 'Content-Type': 'application/json;charset=UTF-8', 'User-Agent': 'selenium/3.141.0 (python linux)'}
executed response {'value': {'sessionId': 'e98e8702b439059644f0c29b33c1f983', 'capabilities': {'acceptInsecureCerts': False, 'browserName': 'chrome', 'browserVersion': '79.0.3945.117', 'chrome': {'chromedriverVersion': '79.0.3945.36 (3582db32b33893869b8c1339e8f4d9ed1816f143-refs/branch-heads/3945@{#614})', 'userDataDir': '/tmp/.com.google.Chrome.JFZwML'}, 'goog:chromeOptions': {'debuggerAddress': 'localhost:42381'}, 'networkConnectionEnabled': False, 'pageLoadStrategy': 'normal', 'platformName': 'linux', 'proxy': {}, 'setWindowRect': True, 'strictFileInteractability': False, 'timeouts': {'implicit': 0, 'pageLoad': 300000, 'script': 30000}, 'unhandledPromptBehavior': 'dismiss and notify', 'webdriver.remote.sessionid': 'e98e8702b439059644f0c29b33c1f983'}}}
after create
-- params POST http://127.0.0.1:4444/wd/hub/session/e98e8702b439059644f0c29b33c1f983/url {"url": "https://google.com"} {'Accept': 'application/json', 'Content-Type': 'application/json;charset=UTF-8', 'User-Agent': 'selenium/3.141.0 (python linux)'}
executed response {'value': None}
-- params GET http://127.0.0.1:4444/wd/hub/session/e98e8702b439059644f0c29b33c1f983/url None {'Accept': 'application/json', 'Content-Type': 'application/json;charset=UTF-8', 'User-Agent': 'selenium/3.141.0 (python linux)'}
executed response {'value': 'https://www.google.com/'}
https://www.google.com/
-- params DELETE http://127.0.0.1:4444/wd/hub/session/e98e8702b439059644f0c29b33c1f983/window None {'Accept': 'application/json', 'Content-Type': 'application/json;charset=UTF-8', 'User-Agent': 'selenium/3.141.0 (python linux)'}
executed response {'value': None}


$ python web.py
before create
before execution
-- params POST http://127.0.0.1:4444/wd/hub/session {"capabilities": {"firstMatch": [{}], "alwaysMatch": {"browserName": "chrome", "platformName": "any"}}, "desiredCapabilities": {"browserName": "chrome", "version": "", "platform": "ANY", "loggingPrefs": {"driver": "DEBUG", "browser": "INFO"}}} {'Accept': 'application/json', 'Content-Type': 'application/json;charset=UTF-8', 'User-Agent': 'selenium/3.141.0 (python linux)'}

Python версия: 3.6.8 docker изображения свободны sh как сейчас