We are not using UIWebView APIs, but still getting warning mail

Hi community.


Recently, every time we upload a testflight, we'll receive a mail saying UIWebView APIs are deprecated and apps using it will be rejected in the near future. But our problem is: actually we are using WKWebView, we have no idea what API we are using is considered a "UIWebView API". Is there a way to get rid of this problem?


Thanks for any help.