NoSuchMethodError SimpleTimeLimiter Error while invoking Chromedriver in ReadyAPI Groovy

Hi,

Starting from Selenium 3, you will need to use GeckoDriver (add the following System Property):

System.setProperty("webdriver.gecko.driver", "C:/Program Files/SmartBear/ReadyAPI-2.3.0/bin/ext/geckodriver.exe");

How to use Firefox in Selenium using geckodriver in Selenium 3: 
http://learn-automation.com/use-firefox-selenium-using-geckodriver-selenium-3/
http://www.automationtestinghub.com/selenium-3-0-launch-firefox-with-geckodriver/

But note that the versions of Selenium Server Standalone starting from 3.6 aren't compatible with an old version of the guava library which is used in ReadyAPI (guava-20.0.jar). To make it work, you will need to replace guava library file guava-20.0.jar with the guava-23.0.jar in this folder: C:\Program Files\SmartBear\ReadyAPI-2.3.0\lib. You can download the guava library version 23.0 from here: https://github.com/google/guava/wiki/Release23

Here is the sample script which you can use:

import org.openqa.selenium.By;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.WebElement;

System.setProperty("webdriver.gecko.driver", "C:/Program Files/SmartBear/ReadyAPI-2.3.0/bin/ext/geckodriver.exe");   //Change the path
def driver = new FirefoxDriver();
log.info("Go to the example page");
driver.get("http://samples.msdn.microsoft.com/workshop/samples/author/dhtml/refs/onclickEX1.htm");
log.info("Enter the 'Test' query string");
def query = driver.findElement(By.xpath("//*[@name='txtOutput']"));
query.sendKeys("Test");
log.info("List the suggestions");
def allSuggestions = driver.findElements(By.xpath("//*[@name='txtOutput']"));
log.info("Post the value of the element or an error if no elements with the appropriate value were found.");
for (def suggestion : allSuggestions) {
  if(suggestion.getAttribute('value') != '')
    log.info(suggestion.getAttribute('value'));
  else
    log.error('The test failed.')
}
log.info("Now quit");
driver.quit();