Caused by kotlinx.serialization.MissingFieldException: Field 'estimate' is required for type with serial name 'io.github.fobo66.data.entities.MmrEstimate', but it was missing at path: $.mmr_estimate at path: $.mmr_estimate
at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:40)
at kotlinx.serialization.json.Json.decodeFromString(Json.kt:100)
at io.ktor.serialization.kotlinx.KotlinxSerializationConverter.deserialize(KotlinxSerializationConverter.kt:71)
at io.ktor.serialization.ContentConverterKt$deserialize$$inlined$map$1$2.emit(Emitters.kt:224)
at kotlinx.coroutines.flow.FlowKt__BuildersKt$asFlow$$inlined$unsafeFlow$3.collect(FlowKt__BuildersKt.java:115)
at kotlinx.coroutines.flow.AbstractFlow.collect$bridge(AbstractFlow.java:176)
at io.ktor.serialization.ContentConverterKt$deserialize$$inlined$map$1.collect(SafeCollector.common.kt:13)
at kotlinx.coroutines.flow.FlowKt__ReduceKt.firstOrNull(FlowKt__ReduceKt.java:243)
at kotlinx.coroutines.flow.FlowKt.firstOrNull(FlowKt.java:1)
at io.ktor.serialization.ContentConverterKt.deserialize(ContentConverterKt.java:128)
at io.ktor.client.plugins.contentnegotiation.ContentNegotiation.convertResponse$ktor_client_content_negotiation(ContentNegotiation.java:185)
at io.ktor.client.plugins.contentnegotiation.ContentNegotiation$Plugin$install$2.invokeSuspend(ContentNegotiation.java:210)
at io.ktor.client.HttpClient$2.invokeSuspend$bridge(HttpClient.kt:1156)
at io.ktor.client.plugins.contentnegotiation.ContentNegotiation$Plugin$install$2.invoke(ContentNegotiation.java:36)
at io.ktor.client.plugins.DefaultTransformKt$defaultTransformers$2.invoke$bridge(DefaultTransformKt.java:36)
at io.ktor.client.plugins.contentnegotiation.ContentNegotiation$Plugin$install$2.invoke(ContentNegotiation.java:41)
at io.ktor.client.HttpClient$2.invoke$bridge(HttpClient.kt:41)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:123)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:81)
at io.ktor.client.HttpClient$4.invokeSuspend(HttpClient.kt:173)
at io.ktor.client.HttpClient$4.invokeSuspend$bridge(HttpClient.kt:176)
at io.ktor.client.HttpClient$4.invoke(HttpClient.kt:35)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:123)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:81)
at io.ktor.util.pipeline.SuspendFunctionGun.proceedWith(SuspendFunctionGun.kt:91)
at io.ktor.client.plugins.HttpCallValidator$Companion$install$2.invokeSuspend(HttpCallValidator.java:138)
at io.ktor.client.plugins.HttpCallValidator$Companion$install$1.invokeSuspend$bridge(HttpCallValidator.kt:63)
at io.ktor.client.plugins.HttpCallValidator$Companion$install$2.invoke(HttpCallValidator.java:26)
at io.ktor.client.plugins.HttpCallValidator$Companion$install$1.invoke$bridge(HttpCallValidator.kt:26)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:123)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:81)
at io.ktor.util.pipeline.SuspendFunctionGun.execute$ktor_utils(SuspendFunctionGun.kt:101)
at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:77)
at io.ktor.client.call.HttpClientCall.bodyNullable(HttpClientCall.kt:88)
at io.github.fobo66.data.api._MatchmakingRatingApiImpl.fetchPlayerProfile(_MatchmakingRatingApiImpl.kt:58)
at io.github.fobo66.data.api._MatchmakingRatingApiImpl$fetchPlayerProfile$1.invokeSuspend(_MatchmakingRatingApiImpl.kt:13)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:138)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:112)
at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:14)
at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:62)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:138)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:112)
at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:14)
at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:62)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:138)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:112)
at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:14)
at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:62)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:138)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:112)
at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:14)
at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:62)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
at kotlinx.coroutines.internal.LimitedDispatcher.run(LimitedDispatcher.kt:42)
at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:2)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.java:570)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)
To Reproduce
Go to settings
Enter player id
Go back to the home screen
See error
Expected behavior
App displays player info and MMR
Smartphone (please complete the following information):
Device: Samsung Watch4 Classic
OS: Android 11 (WearOS 3)
Version v2.1
Additional context
Crash seems to originate from kotlinx.serialization
fobo66
commented
2 years ago 
Describe the bug Looks like app crashed multiple times during Play Store review on the real device.
Link to the Crashlytics
Stacktrace:
To Reproduce
Expected behavior App displays player info and MMR
Smartphone (please complete the following information):
Additional context
Crash seems to originate from kotlinx.serialization