ios - NSCFData gunzippedData crash -
i integrating payu in swift 2 based project using sample code source link: https://github.com/payu-intrepos/ios-sdk/releases/tag/v3.3 the app crashes following log in console, when payu webview code class payuuipaymentuiwebviewcontroller executed: webviewdidstartload url-----> 2016-01-07 19:07:59.788 mytestapp[14764:2080307] -[__nscfdata gunzippeddata]: unrecognized selector sent instance 0x7f80395de440 2016-01-07 19:07:59.809 mytestapp[14764:2080307] *** terminating app due uncaught exception 'nsinvalidargumentexception', reason: '-[__nscfdata gunzippeddata]: unrecognized selector sent instance 0x7f80395de440' it unhandled exception. know means? cause of it? in xcode project add "-objc" in other linker flags in project build settings.