Please tell me why the following error occurs when I request distribution to APNs. java.util.concurrent.ExecutionException: io.netty.channel.AbstractChannel$AnnotatedSocketException: Network is unreachable: no further information: api.push.apple.com/2620:149:208:4305:0:0:0:b:443

Please tell me why the following error occurs when I request distribution to APNs. java.util.concurrent.ExecutionException: io.netty.channel.AbstractChannel$AnnotatedSocketException: Network is unreachable: no further information: api.push.apple.com/2620:149:208:4305:0:0:0:b:443

WKWebView title property is returned empty on iOS 15. Is there any possible cause? The title is returned properly in the previous version.

For apps published in the store, there is a problem that the screen becomes blank when the app is started and the app cannot be started. It seems that the splash screen is not displayed either. Restarting the iPhone seems to fix it temporarily, but after a while the problem reoccurs. Is there a possible cause for this problem?