I'm using WKWebView to display help content in an app. It's embedded in a view that's displayed by a view controller when required, and the help content is extracted from the app's main bundle and loaded via loadHTMLString. This all works without a problem, but exactly 30 seconds after navigating away from the help view two messages appear on the log:Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified serviceCould not signal service com.apple.WebKit.Networking: 113: Could not find specified serviceI've confirmed that the view controller and view containing the WKWebView have been deallocated as expected when navigating away from the help view, so I'm unsure what could be remaining active to cause these messages, especially given all the content displayed is local to the app.