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What are you trying to achieve?

I am trying to run a simple test and try to see what things I am doing wrong here, it's first time when I am setting up Codeception from scratch.

What do you get instead?

I have the following error:

[ConnectionException] Can't connect to Webdriver at http://selenium:4444/wd/hub . Please make sure that Selenium Server or PhantomJS is running.

Provide console output if related. Use -vvv mode for more details.

# paste output here

Provide test source code if related

// $I = new AcceptanceTester($scenario);
$I->wantTo('Login and check functionality');
//Login
$I->amOnPage('/user/account/login');
$I->waitForText('login');

Details

actor: Tester
paths:
    tests: tests
    output: tests/_output
    data: tests/_data
    support: tests/_support
    envs: tests/_envs
actor_suffix: Tester
extensions:
    enabled:
    - Codeception\Extension\RunFailed
modules:
    config:
            dsn: ''
            user: ''
            password: ''
            dump: tests/_data/dump.sql
coverage:
    enabled: true

And now I have a different error:
[Facebook\WebDriver\Exception\SessionNotCreatedException] Unable to create new service: GeckoDriverService
Build info: version: '3.14.0', revision: 'aacccce0', time: '2018-08-02T20:13:22.693Z'
Driver info: driver.version: unknown

Are you passing -Dwebdriver.gecko.driver=./geckodriver. parameter to Selenium with correct path to geckodriver?

Also you must use Selenium 3.8 or older if you want to get it working with Codeception: #5083 (comment)

Firefox is the pain in the ass for the last couple of years.

Ok, so I am doing it like this now as I have Selenium 3.8.0:

java -Dwebdriver.gecko.driver="geckodriver.exe" -jar selenium-server-standalone-3.8.0.jar

but I am back with the same error when trying to run the test:

ConnectionException] Can't connect to Webdriver at http://secureportal:4444/wd/hub . Please make sure that Selenium Server or PhantomJS is running.

Same thing, same error.
Debugger is throwing this before the error:

WebDriver::debugWebDriverLogs method has been called when webDriver is not set
WebDriver::_saveScreenshot method has been called when webDriver is not set
WebDriver::_savePageSource method has been called when webDriver is not set

Having gekodriver geckodriver-v0.21.0-win64 and running it like this:

java -Dwebdriver.gecko.driver="geckodriver.exe" -jar selenium-server-standalone-3.8.0.jar

and also with selenium 3.8.0 as the version it fixed the error:

Thank you for your help, I can close this one.