After test:report:chrome Report generation done, Terminal not closing the instance, it keeps running

I am using protector, selenium for running the UI automation.

For chrome driver I am using webdriver-manager for testing the UI Automation. It run successfully, browser also close but it keeps running the terminal instance can anyone help me on this?

config.directConnect = false;
        config.seleniumAddress = "http://127.0.0.1:4444/wd/hub";
        config.capabilities.chromeOptions = chromeOptions = {
          args: [
            "--no-sandbox",
            "--disable-infobars",
            "--disable-dev-shm-usage",
            "--disable-extensions",
            "--log-level=3",
            "--disable-gpu",
            "--start-maximized"
          ].concat(isCI ? ["--headless"] : []), // run in headless mode on the CI server
          prefs: {
            "download.default_directory": downloadDir
          }
        };
        config.serenity = {
          outputDirectory: `${process.cwd()}/test_reports_chrome`,
          runner: "cucumber",
          crew: [
            ArtifactArchiver.storingArtifactsAt("./test_reports_chrome"),
            ConsoleReporter.forDarkTerminals(),
            Photographer.whoWill(TakePhotosOfInteractions), // or Photographer.whoWill(TakePhotosOfFailures),
            new SerenityBDDReporter()
          ]

Terminal Instance

How many English words
do you know?
Test your English vocabulary size, and measure
how many words do you know
Online Test
Powered by Examplum