Able to record but unable to run the test case

Hi,

I am using Katalon Studio Version: 5.2.0
Recorded the test properly, while running the test case Katalon unable to launch the url.

Please go thru the error as below:

Test Cases/New Test Case FAILED because (of) Unable to navigate to ‘https://staging.myskillsfuture.sg/content/portal/en/index.html’ (Root cause: org.openqa.selenium.WebDriverException: Reached error page: about:neterror?e=connectionFailure&u=https%3A//REMOVEDURLINTENTIONALLY/content/portal/en/index.html&c=UTF-8&f=regular&d=Firefox%20can%E2%80%99t%20establish%20a%20connection%20to%20the%20server%20at%20REMOVEDURLINTENTIONALLY.

Build info: version: ‘3.7.1’, revision: ‘8a0099a’, time: ‘2017-11-06T21:07:36.161Z’

System info: host: ‘NCS-230616WL03’, ip: ‘10.70.144.248’, os.name: ‘Windows 7’, os.arch: ‘amd64’, os.version: ‘6.1’, java.version: ‘1.8.0_102’

Driver info: com.kms.katalon.core.webui.driver.firefox.CGeckoDriver

Capabilities {acceptInsecureCerts: true, browserName: firefox, browserVersion: 57.0.2, javascriptEnabled: true, moz:accessibilityChecks: false, moz:headless: false, moz:processID: 14784, moz:profile: C:\Users\mandapk\AppData\Lo…, moz:webdriverClick: false, pageLoadStrategy: normal, platform: XP, platformName: XP, platformVersion: 6.1, proxy: Proxy(direct), rotatable: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}}

Session ID: 147c1b5f-f7c7-4b4a-8c40-40b0f0a5213a)

Test Cases/New Test Case.run:25

Thanks,
Prem Kumar