Augmented Reality app unable to load the image from the camera

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Created Jul ’24

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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.

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Answer 1

jlilest OP

Jul ’24

I would test it with iOS versions it is known to work with to be sure it isn't broken. It looks like you are using at least one third party framework. I would see if there is an updated version available.

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Answer 2

fbartolom OP

1w

Thanks for your answer. I use absolutely no third party library used; as a matter of fact the App worked smoothly before installing the iOS18 beta and perhaps even sometime later. Also the version on the AppleStore also works with no problems with basically the same code.

This is the rest of the errors:

FigCaptureSourceRemote Fig assert: "err == 0 " at bail (FigCaptureSourceRemote.m:275) - (err=-12784)

ARSCNCompositor <0x301b84fc0>: ARSCNCompositor (0, 0) initialization failed. Matting is not set up properly.

ARDepthSensor <0x301dc1950>: (AVCaptureDeviceTypeBuiltInTimeOfFlightCamera - Back): capture session dropped jasper frame: 334023.383424, LateData

ARDepthSensor <0x301dc1950>: (AVCaptureDeviceTypeBuiltInTimeOfFlightCamera - Back): capture session dropped jasper frame: 334023.466850, LateData

ARImageSensor <0x3019d8b60>: AVCaptureDeviceTypeBuiltInWideAngleCamera: No video frame received. Dropping frame! Reason: 1

Mostly repeated several times.

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