This message is just an informational message. The "strange" file name, cb4u.js, is for debugging the code in the browser's developers tools console.
thank you, Can you tell me what the solution is ?
@waleedtaleb There is no "solution" since this is the way it's supposed to work. This message always comes up for a page.
@Yisrael (Wix) but related products don't work why?