Resolve cookie synchronizing in wkwebview in Swift.

I am developing a WKWebview app in swift. Here One needs to login to a specific [login to view URL] this , I am throwing a cookie with logged in information/token. But the problem occurs when I try to logout and the check if token exists? And the token still exists even after logout. Please contact if you can resolve it asap. I will provide you code. Its just a 1 file code.