App crashes when a packet is received from my device

[flyte]

The app connects to my Chirpstack MQTT broker OK when I press the play button, but as soon as a packet is received from my LoRa device, the packet number increments, then the app immediately crashes out.

I'll add a comment from my phone with what I think is the most relevant part of the log.

[flyte]

--------- beginning of crash
07-04 12:47:16.025 20379 25443 E AndroidRuntime: FATAL EXCEPTION: Thread-232
07-04 12:47:16.025 20379 25443 E AndroidRuntime: Process: org.ttnmapper.phonesurveyor, PID: 20379
07-04 12:47:16.025 20379 25443 E AndroidRuntime: java.lang.NullPointerException
07-04 12:47:16.025 20379 25443 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.aggregates.AppAggregate.processMessage(AppAggregate.kt:393)
07-04 12:47:16.025 20379 25443 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2.messageArrived$lambda$0(MyService.kt:114)
07-04 12:47:16.025 20379 25443 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2.$r8$lambda$Re5dj5WbxTLWff1cQvqYB1h8-J4(Unknown Source:0)
07-04 12:47:16.025 20379 25443 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2$$ExternalSyntheticLambda0.invoke(D8$$SyntheticClass:0)
07-04 12:47:16.025 20379 25443 E AndroidRuntime: 	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)
07-04 12:47:21.489 25483 25502 I DisplayManager: Choreographer implicitly registered for the refresh rate.
07-04 12:47:42.506 25483 26483 E AndroidRuntime: FATAL EXCEPTION: Thread-809
07-04 12:47:42.506 25483 26483 E AndroidRuntime: Process: org.ttnmapper.phonesurveyor, PID: 25483
07-04 12:47:42.506 25483 26483 E AndroidRuntime: java.lang.NullPointerException
07-04 12:47:42.506 25483 26483 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.aggregates.AppAggregate.processMessage(AppAggregate.kt:393)
07-04 12:47:42.506 25483 26483 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2.messageArrived$lambda$0(MyService.kt:114)
07-04 12:47:42.506 25483 26483 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2.$r8$lambda$Re5dj5WbxTLWff1cQvqYB1h8-J4(Unknown Source:0)
07-04 12:47:42.506 25483 26483 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2$$ExternalSyntheticLambda0.invoke(D8$$SyntheticClass:0)
07-04 12:47:42.506 25483 26483 E AndroidRuntime: 	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)
07-04 12:47:49.361 26562 26619 I DisplayManager: Choreographer implicitly registered for the refresh rate.
07-04 12:48:11.300 26562 26760 E AndroidRuntime: FATAL EXCEPTION: Thread-84
07-04 12:48:11.300 26562 26760 E AndroidRuntime: Process: org.ttnmapper.phonesurveyor, PID: 26562
07-04 12:48:11.300 26562 26760 E AndroidRuntime: java.lang.NullPointerException
07-04 12:48:11.300 26562 26760 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.aggregates.AppAggregate.processMessage(AppAggregate.kt:393)
07-04 12:48:11.300 26562 26760 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2.messageArrived$lambda$0(MyService.kt:114)
07-04 12:48:11.300 26562 26760 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2.$r8$lambda$Re5dj5WbxTLWff1cQvqYB1h8-J4(Unknown Source:0)
07-04 12:48:11.300 26562 26760 E AndroidRuntime: 	at org.ttnmapper.phonesurveyor.services.MyService$startMQTTConnection$2$$ExternalSyntheticLambda0.invoke(D8$$SyntheticClass:0)
07-04 12:48:11.300 26562 26760 E AndroidRuntime: 	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)
--------- beginning of main
07-04 12:49:01.197 26766 26784 D Mqtt    : application/e6fdda85-7d78-4eef-818e-951067b46760/device/19f1be6d1204cb3a/event/up: {"deduplicationId":"36f68d10-0cde-4900-b970-b7ff4036a3b2","time":"2025-07-04T11:48:59.586690670+00:00","deviceInfo":{"tenantId":"62481366-49b2-4c74-ba18-362f41de10ba","tenantName":"Failcode","applicationId":"e6fdda85-7d78-4eef-818e-951067b46760","applicationName":"MyApp","deviceProfileId":"02ecf808-c0e0-4bed-9a9d-b492f5d50832","deviceProfileName":"LoRa-E5","deviceName":"DevBoard","devEui":"19f1be6d1204cb3a","deviceClassEnabled":"CLASS_C","tags":{}},"devAddr":"0079ce3a","adr":true,"dr":5,"fCnt":8,"fPort":1,"confirmed":false,"data":"AA==","rxInfo":[{"gatewayId":"03242c031f112d5f","uplinkId":36457,"nsTime":"2025-07-04T11:48:59.377351566+00:00","rssi":-41,"snr":13.2,"channel":1,"rfChain":1,"location":{"latitude":01.23456,"longitude":-7.891011,"altitude":69.0},"context":"7jtOGA==","crcStatus":"CRC_OK"}],"txInfo":{"frequency":868300000,"modulation":{"lora":{"bandwidth":125000,"spreadingFactor":7,"codeRate":"CR_4_5"}}},"regionConfigId":"eu868"}