I resolved this by removing the static embedded framework. Embedding without signing doesn't seem to work.

Issue is still present in iOS 14 Beta 5 with Xcode 12 Beta 5. I am unable to build in Xcode 11 and run in Xcode 12.

This is an ongoing issue. Same issue persists with Beta 4. Ticket is open.

Thanks @VVD93. I ended up having to user WKWebview with a local url callback and listening for it. For anyone interested, I've pasted the code below: func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {         // here we handle internally the callback url and call method that call handleOpenURL (not app scheme used)         if let url = navigationAction.request.url, url.host == "localhost" , url.path == "/linkedin-oauth-callback" {             if self.codeCheck == false {                 if let code = url.valueOf("code") {                     Log("Found code: \(code)")                     codeCheck = true                     getToken(code: code)                 }             } else {                              }             //decisionHandler(.cancel)             /*  Dismiss your view controller as normal                 And proceed with OAuth authorization code                 The code you receive here is not the auth token; For auth token you have to make another api call with the code that you received here and you can procced further              */         }         decisionHandler(.allow)     }

I've had the same issue. Also submitted to Feedback. This is a very odd situation because the app was on the testing device since Beta 1 but I've noticed of getting a similar error when building and running on iOS 13.6 device. However, after a 2nd build and run cleared the error; no such luck for Betas 3&4. For iOS 14 Beta, issue started on Beta 3 but persists on Beta 4. Swapping certificates doesn't help. New Xcode build (12 Beta 4) doesn't help either.

I've had exact same issue. I submitted to Feedback. Does anyone have a fix or workaround? Tried everything I know to do - uninstall/reinstall Xcode, delete app from phone, commit all changes, etc. Nothing seems to fix it.