Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

WebdriverIO Version

9.8.0

Node.js Version

22

Mode

WDIO Testrunner

Which capabilities are you using?

{
  browserName: 'chrome',
  browserVersion: 'stable',
  maxInstances: 5,
  acceptInsecureCerts: true,
  'goog:chromeOptions': ['--headless', '--disable-gpu', '--disable-dev-shm-usage']
}

What happened?

Recently updated my wdio dependencies to v9.8.0 and started seeing issues on linux.

Error is from webdriver itself but I don't know if it relates to webdriverio somehow.
@christian-bromann, does it ring a bell to you ?

[0-0] 2025-02-07T12:51:28.018Z DEBUG webdriver: request failed due to response error: session not created
[0-0] 2025-02-07T12:51:28.018Z WARN webdriver: WebDriverError: session not created: probably user data directory is already in use, please specify a unique value for --user-data-dir argument, or don't use --user-data-dir when running "http://localhost:38449/session" with method "POST" and args "{"capabilities":{"alwaysMatch":{"browserName":"chrome","browserVersion":"stable","acceptInsecureCerts":true,"goog:chromeOptions":{"binary":"/tmp/chrome/linux-133.0.6943.53/chrome-linux64/chrome","args":["--headless","--disable-gpu","--disable-dev-shm-usage"]},"webSocketUrl":true,"unhandledPromptBehavior":"ignore"},"firstMatch":[{}]}}"

Working fine on macOS and windows.

Relevant log output

See full log here : https://github.com/Badisi/wdio-harness/actions/runs/13200174541/job/36850156663

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Is there an existing issue for this?

• I have searched the existing issues