seleniumgists

/venv/lib/python3.7/site-packages/selenium/webdriver/remote/remote_connection.py", line 369, in execute
    path = string.Template(command_info[1]).substitute(params)
  File "/usr/lib/python3.7/string.py", line 132, in substitute
    return self.pattern.sub(convert, self.template)
  File "/usr/lib/python3.7/string.py", line 125, in convert
    return str(mapping[named])
KeyError: 'sessionId'

seleniumgists

venv/lib/python3.7/site-packages/selenium/webdriver/remote/remote_connection.py:369: in execute
    path = string.Template(command_info[1]).substitute(params)
/usr/lib/python3.7/string.py:132: in substitute
    return self.pattern.sub(convert, self.template)

seleniumgists

irb(main):002:1*  options = {
irb(main):003:1*    args: [],
irb(main):004:1*    w3c: true,
irb(main):005:1*    mobileEmulation: {},
irb(main):006:1*    prefs: {"enable-webrtc-hide-local-ips-with-mdns" => false},
irb(main):007:1*    extensions: []
irb(main):008:0>  }
irb(main):009:0>   caps = Selenium::WebDriver::Chrome::Options.new(options: options)
irb(main):010:0> caps
=> #<Selenium::WebDriver::Chrome::Options:0x00007f7fe9f09c70 @args=#<Set: {}>, @binary=nil, @prefs={}, @extensions=[], @options={:args=>[], :w3c=>true, :mobileEmulation=>{}, :prefs=>{"enable-webrtc-hide-local-ips-with-mdns"=>false}, :extensions=>[]}, @emulation={}, @detach=nil, @profile=nil, @encoded_extensions=[]>

seleniumgists

"goog:chromeOptions": {
            "args": [  ],
            "extensions": [  ],
            "prefs": {
               "enable-webrtc-hide-local-ips-with-mdns": false
            }
         }

seleniumgists

from invalid argument: unrecognized chrome option: enable-webrtc-hide-local-ips-with-mdns

seleniumgists

irb(main):097:0> options = Selenium::WebDriver::Chrome::Options.new
irb(main):098:0> options.add_option("enable-webrtc-hide-local-ips-with-mdns", false)
=> false
irb(main):099:0> driver = Selenium::WebDriver.for :chrome, options: options
Traceback (most recent call last):
       16: from 15  chromedriver                        0x0000000106542109 chromedriver + 4522249
       15: from 14  chromedriver                        0x000000010656b6bb chromedriver + 4691643
       14: from 13  chromedriver                        0x000000010656b91b chromedriver + 4692251
       13: from 12  chromedriver                        0x000000010655e5af chromedriver + 4638127
       12: from 11  chromedriver                        0x000000010610e635 chromedriver + 116277

seleniumgists

options.add_option("enable-webrtc-hide-local-ips-with-mdns", false);

seleniumgists

options = Selenium::WebDriver::Chrome::Options.new(local_state: {"browser": {"enabled_labs_experiments": "enable-webrtc-hide-local-ips-with-mdns"}})
driver = Selenium::WebDriver.for :chrome, options: options
driver.get('<chrome://flags/#enable-webrtc-hide-local-ips-with-mdns>')

seleniumgists

WARN [SpanWrappedHttpHandler.execute] - Unable to execute request: Unable to find provider for session: Capabilities {browserName: chrome, goog:chromeOptions: {args: [--incognito, --no-sandbox, --disable-dev-shm-usage], extensions: []}}```
and also errors like this in the actual test failure log:
`NettyHttpHandler request execution error`
`Run 1: Unable to find provider for session: Capabilities {browserName: chrome, goog:chromeOptions: {args: [--incognito, --no-sandbox, --disable-dev-shm-usage], extensions: []}}`
This is my `docker-compose.yml` file:
```version: "3"
services:
  selenium-hub:
    image: selenium/hub:4.0.0-alpha-6-20200721
    container_name: selenium-hub

seleniumgists

{
"value": {
"ready": false,
"message": "Selenium Grid not ready.",
"nodes": []
}
}