I have an app on the App Store for many years enabling users to post text into clouds in augmented reality. Yet last week abruptly upon installing the app on the iPhone the screen started going totally dark and a list of little comprehensible logs came up of the kind: ARSCNCompositor <0x300ad0e00>: ARSCNCompositor (0, 0) initialization failed. Matting is not set up properly. many times, then RWorldTrackingTechnique <0x106235180>: Unable to update pose [PredictorFailure] for timestamp 870.392108 ARWorldTrackingTechnique <0x106235180>: Unable to predict pose [1] for timestamp 870.392108 again several times and then: ARWorldTrackingTechnique <0x106235180>: SLAM error callback: Error Domain=Slam Error Code=7 "Non fatal error occurred due to significant drop in a IMU data" UserInfo={NSDescription=Non fatal error occurred due to significant drop in a IMU data, NSLocalizedFailureReason=SlamEngineNodeGroup Failure: IMU issue: gyro data stream verification failed [Significant data drop]. Failed on timestamp: 870.413247, Last known timestamp: 865.350198, Delta: 5.063049, System timestamp: 870.415781, Delta between system and frame: 0.002534. } and then again the pose issues several times. I hoped the new beta version would have solved the issue, but it was not the case. Unfortunately I do not know if that depends on the beta version or some other issue, given the app may be not installed on the Mac simulator.

Quite abrupdedly my project stopped executing by reporting error:error: WatchKit App doesn't contain any WatchKit Extensions. Verify that the value of NSExtensionPointIdentifier in your WatchKit Extension's Info.plist is set to com.apple.watchkit.Of course NSExtensionPointIdentifier is correctly set to com.apple.watchkit.What could it be and how to fix it?This is the relevant part of the info.plist file:&lt;key&gt;NSExtension&lt;/key&gt; &lt;dict&gt; &lt;key&gt;NSExtensionAttributes&lt;/key&gt; &lt;dict&gt; &lt;key&gt;WKAppBundleIdentifier&lt;/key&gt; &lt;string&gt;com.information.inArrivo.watchkitapp&lt;/string&gt; &lt;/dict&gt; &lt;key&gt;NSExtensionPointIdentifier&lt;/key&gt; &lt;string&gt;com.apple.watchkit&lt;/string&gt; &lt;/dict&gt;