microsoft/playwright · error · Error

Playwright manages remote debugging connection itself.

Error message

Playwright manages remote debugging connection itself.

What it means

Error "Playwright manages remote debugging connection itself." thrown in microsoft/playwright.

Source

Thrown at packages/playwright-core/src/server/bidi/bidiChromium.ts:111

    chromeArguments.push('--remote-debugging-port=0');
    if (isPersistent)
      chromeArguments.push('about:blank');
    else
      chromeArguments.push('--no-startup-window');
    return chromeArguments;
  }

  override async waitForReadyState(options: types.LaunchOptions, browserLogsCollector: RecentLogsCollector): Promise<{ wsEndpoint?: string }> {
    return waitForReadyState({ ...options, args: ['--remote-debugging-port=0'] }, browserLogsCollector);
  }

  private _innerDefaultArgs(options: types.LaunchOptions): string[] {
    const { args = [] } = options;
    const userDataDirArg = args.find(arg => arg.startsWith('--user-data-dir'));
    if (userDataDirArg)
      throw this._createUserDataDirArgMisuseError('--user-data-dir');
    if (args.find(arg => arg.startsWith('--remote-debugging-pipe')))
      throw new Error('Playwright manages remote debugging connection itself.');
    if (args.find(arg => !arg.startsWith('-')))
      throw new Error('Arguments can not specify page to be opened');
    const chromeArguments = [...chromiumSwitches()];

    if (os.platform() === 'darwin') {
      // See https://issues.chromium.org/issues/40277080
      chromeArguments.push('--enable-unsafe-swiftshader');
    }

    if (options.headless) {
      chromeArguments.push('--headless');

      chromeArguments.push(
          '--hide-scrollbars',
          '--mute-audio',
          '--blink-settings=primaryHoverType=2,availableHoverTypes=2,primaryPointerType=4,availablePointerTypes=4',
      );
    }

View on GitHub (pinned to c8fc3bf8d3)

When it happens

Trigger: Thrown at packages/playwright-core/src/server/bidi/bidiChromium.ts:111 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of microsoft/playwright@c8fc3bf8d3 (2026-08-12). Data as JSON: /api/errors/e453c39cc0d62448. Report an issue: GitHub.