Selenium with Docker: KeyError status

[Yuya Furusawa]

Hi all,

This is my first post(and first time using google Group), so I'm sorry if this is the wrong way to ask a question.

I have a problem with Docker Selenium.

The Problem Description:

When I run example.py(see below), I got the following error.

% docker-compose exec app python src/example.py

Traceback (most recent call last):

  File "src/example.py", line 13, in <module>

    options=options,

  File "/usr/local/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__

    self.start_session(capabilities, browser_profile)

  File "/usr/local/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session

    response = self.execute(Command.NEW_SESSION, parameters)

  File "/usr/local/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute

    self.error_handler.check_response(response)

  File "/usr/local/lib/python3.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 130, in check_response

    status = value["status"]

KeyError: 'status'

Why I have KeyError?

I can see similar questions, but I have yet to find a solution to this problem.

- https://stackoverflow.com/questions/50595740/selenium-and-ie

- https://github.com/SeleniumHQ/docker-selenium/issues/1328

- https://github.com/SeleniumHQ/selenium/issues/9437

Directory Structure:

Desktop

└── selenium_example

             ├── docker-compose.yml

             ├── Dockerfile

             ├── requirements.txt

            └── src

                         └── example.py

The Code:

Dockerfile

FROM python:3.9-slim

ENV PYTHONIOENCODING utf-8

RUN mkdir -p /app

WORKDIR /app

COPY ./requirements.txt ./requirements.txt

RUN pip install -r requirements.txt

docker-compose.yml

version: "3"

services:

  selenium:

    image: selenium/standalone-chrome:4.0.0-rc-1-prerelease-20210618

    ports:

      - 4444:4444

      - 5900:5900

    shm_size: "2gb"

  app:

    build: .

    volumes:

      - /path/to/Desktop/selenium_example:/app

    tty: true

requirements.txt

selenium

example.py

from selenium import webdriver

if __name__ == '__main__':

  options = webdriver.ChromeOptions()

  options.add_argument('--headless')

  driver = webdriver.Remote(

    command_executor="http://selenium:4444/wd/hub",

    desired_capabilities=options.to_capabilities(),

    options=options,

  )

  driver.get("https://google.com")

  print(driver.current_url)

  driver.quit()

Extra Info:

macOS Big Sur(version 11.4)

Apple M1

% docker version

Client:

 Cloud integration: 1.0.17

 Version:           20.10.7

 API version:       1.41

 Go version:        go1.16.4

 Git commit:        f0df350

 Built:             Wed Jun  2 11:56:23 2021

 OS/Arch:           darwin/arm64

 Context:           default

 Experimental:      true

Server: Docker Engine - Community

 Engine:

  Version:          20.10.7

  API version:      1.41 (minimum version 1.12)

  Go version:       go1.13.15

  Git commit:       b0f5bc3

  Built:            Wed Jun  2 11:55:36 2021

  OS/Arch:          linux/arm64

  Experimental:     false

 containerd:

  Version:          1.4.6

  GitCommit:        d71fcd7d8303cbf684402823e425e9dd2e99285d

 runc:

  Version:          1.0.0-rc95

  GitCommit:        b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7

 docker-init:

  Version:          0.19.0

  GitCommit:        de40ad0

% docker-compose exec app pip list

Package    Version

---------- -------

pip        21.1.2

selenium   3.141.0

setuptools 57.0.0

urllib3    1.26.6

wheel      0.36.2

-----

Thank you very much for your help!