ReadyAPI with selenium-org.openqa.selenium.By not recognized

Hi,

For the final step of the automation of my JWT token I need to mimic the clicks and fill in textfields in the login pages of my different users. I thoughed to use Selenium driver for this but at the first line ReadyAPI already stumbles over the  import  org.openqa.selenium.By

Is there something that I should install somewhere please? a driver? I have my chromedriver in the project itself. ... Don't know about Selenium. I thoughed SeleniumDriver was something else, or am I mistaken?

thanks for responding,

kind regards,

AAB