Button not pressed selenium java : I have a site I wanna automate. There is a popup (what before poping up is hided) with a cancel and ok button. There seems to be no way i can automaticly press the ok button (cancel also not). Please help....see code

xpath: 
//*[@id=\"lightbox\"]/div[2]/div/div[1]/div[2]/button[2]
not working

ty

[code][1]


  [1]: https://i.stack.imgur.com/qUJfS.jpg