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Bug in production: unsafe list access #108

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Bug in production: unsafe list access#108
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bugSomething isn't working
@zachseidner1

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@zachseidner1
zachseidner1
opened on Apr 29, 2025

We had a crash occur in production. This is the stacktrace:

Exception java.util.NoSuchElementException: List is empty.
  at kotlin.collections.CollectionsKt___CollectionsKt.last (_Collections.kt:428)
  at com.cornellappdev.transit.ui.screens.DetailsScreenKt.DetailsBottomSheet (DetailsScreen.kt:247)
  at com.cornellappdev.transit.ui.screens.DetailsScreenKt.access$DetailsBottomSheet (DetailsScreen.kt:1)
  at com.cornellappdev.transit.ui.screens.DetailsScreenKt$DetailsScreen$1.invoke (DetailsScreen.kt:128)
  at com.cornellappdev.transit.ui.screens.DetailsScreenKt$DetailsScreen$1.invoke (DetailsScreen.kt:126)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:118)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:35)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt$StandardBottomSheet$4.invoke (BottomSheetScaffold.kt:340)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt$StandardBottomSheet$4.invoke (BottomSheetScaffold.kt:333)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:109)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:35)
  at androidx.compose.material3.SurfaceKt$Surface$1.invoke (Surface.kt:126)
  at androidx.compose.material3.SurfaceKt$Surface$1.invoke (Surface.kt:108)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:109)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:35)
  at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider (CompositionLocal.kt:380)
  at androidx.compose.material3.SurfaceKt.Surface-T9BRK9s (Surface.kt:105)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt.StandardBottomSheet-kypuDLs (BottomSheetScaffold.kt:303)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt$BottomSheetScaffold$1.invoke (BottomSheetScaffold.kt:175)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt$BottomSheetScaffold$1.invoke (BottomSheetScaffold.kt:171)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:118)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:35)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt$BottomSheetScaffoldLayout$1$1$sheetPlaceable$1.invoke (BottomSheetScaffold.kt:224)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt$BottomSheetScaffoldLayout$1$1$sheetPlaceable$1.invoke (BottomSheetScaffold.kt:223)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:109)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:35)
  at androidx.compose.ui.layout.LayoutNodeSubcompositionsState$subcompose$3$1$1.invoke (SubcomposeLayout.kt:1017)
  at androidx.compose.ui.layout.LayoutNodeSubcompositionsState$subcompose$3$1$1.invoke (SubcomposeLayout.kt:493)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:109)
  at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke (ComposableLambda.jvm.kt:35)
  at androidx.compose.runtime.ActualJvm_jvmKt.invokeComposable (ActualJvm.jvm.kt:97)
  at androidx.compose.runtime.ComposerImpl.doCompose (Composer.kt:3595)
  at androidx.compose.runtime.ComposerImpl.composeContent$runtime_release (Composer.kt:3522)
  at androidx.compose.runtime.CompositionImpl.composeContent (Composition.kt:743)
  at androidx.compose.runtime.Recomposer.composeInitial$runtime_release (Recomposer.kt:1122)
  at androidx.compose.runtime.ComposerImpl$CompositionContextImpl.composeInitial$runtime_release (Composer.kt:3876)
  at androidx.compose.runtime.CompositionImpl.composeInitial (Composition.kt:649)
  at androidx.compose.runtime.CompositionImpl.setContent (Composition.kt:635)
  at androidx.compose.ui.layout.LayoutNodeSubcompositionsState.subcomposeInto (SubcomposeLayout.kt:516)
  at androidx.compose.ui.layout.LayoutNodeSubcompositionsState.subcompose (SubcomposeLayout.kt:488)
  at androidx.compose.ui.layout.LayoutNodeSubcompositionsState.subcompose (SubcomposeLayout.kt:479)
  at androidx.compose.ui.layout.LayoutNodeSubcompositionsState.subcompose (SubcomposeLayout.kt:463)
  at androidx.compose.ui.layout.LayoutNodeSubcompositionsState$Scope.subcompose (SubcomposeLayout.kt:895)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt$BottomSheetScaffoldLayout$1$1.invoke-0kLqBqw (BottomSheetScaffold.kt:223)
  at io.morfly.compose.bottomsheet.material3.BottomSheetScaffoldKt$BottomSheetScaffoldLayout$1$1.invoke (BottomSheetScaffold.kt:218)
  at androidx.compose.ui.layout.LayoutNodeSubcompositionsState$createMeasurePolicy$1.measure-3p2s80s (SubcomposeLayout.kt:725)
  at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0 (InnerNodeCoordinator.kt:135)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke (LayoutNodeLayoutDelegate.kt:316)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke (LayoutNodeLayoutDelegate.kt:315)
  at androidx.compose.runtime.snapshots.Snapshot$Companion.observe (Snapshot.kt:503)
  at androidx.compose.runtime.snapshots.SnapshotStateObserver$ObservedScopeMap.observe (SnapshotStateObserver.kt:502)
  at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads (SnapshotStateObserver.kt:258)
  at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release (OwnerSnapshotObserver.kt:133)
  at androidx.compose.ui.node.OwnerSnapshotObserver.observeMeasureSnapshotReads$ui_release (OwnerSnapshotObserver.kt:113)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate.performMeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:1782)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate.access$performMeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:40)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.remeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:696)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.measure-BRTryo0 (LayoutNodeLayoutDelegate.kt:672)
  at androidx.compose.animation.AnimatedEnterExitMeasurePolicy.measure-3p2s80s (AnimatedVisibility.kt:812)
  at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0 (InnerNodeCoordinator.kt:135)
  at androidx.compose.animation.EnterExitTransitionModifierNode.measure-3p2s80s (EnterExitTransition.kt:1173)
  at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0 (LayoutModifierNodeCoordinator.kt:188)
  at androidx.compose.ui.graphics.BlockGraphicsLayerModifier.measure-3p2s80s (GraphicsLayerModifier.kt:578)
  at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0 (LayoutModifierNodeCoordinator.kt:188)
  at androidx.compose.animation.AnimatedContentKt$AnimatedContent$6$1$1$1.invoke-3p2s80s (AnimatedContent.kt:781)
  at androidx.compose.animation.AnimatedContentKt$AnimatedContent$6$1$1$1.invoke (AnimatedContent.kt:780)
  at androidx.compose.ui.layout.LayoutModifierImpl.measure-3p2s80s (LayoutModifier.kt:294)
  at androidx.compose.ui.node.LayoutModifierNodeCoordinator.measure-BRTryo0 (LayoutModifierNodeCoordinator.kt:188)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke (LayoutNodeLayoutDelegate.kt:316)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke (LayoutNodeLayoutDelegate.kt:315)
  at androidx.compose.runtime.snapshots.Snapshot$Companion.observe (Snapshot.kt:503)
  at androidx.compose.runtime.snapshots.SnapshotStateObserver$ObservedScopeMap.observe (SnapshotStateObserver.kt:502)
  at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads (SnapshotStateObserver.kt:258)
  at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release (OwnerSnapshotObserver.kt:133)
  at androidx.compose.ui.node.OwnerSnapshotObserver.observeMeasureSnapshotReads$ui_release (OwnerSnapshotObserver.kt:113)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate.performMeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:1782)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate.access$performMeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:40)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.remeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:696)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.measure-BRTryo0 (LayoutNodeLayoutDelegate.kt:672)
  at androidx.compose.animation.AnimatedContentMeasurePolicy.measure-3p2s80s (AnimatedContent.kt:837)
  at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0 (InnerNodeCoordinator.kt:135)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke (LayoutNodeLayoutDelegate.kt:316)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke (LayoutNodeLayoutDelegate.kt:315)
  at androidx.compose.runtime.snapshots.Snapshot$Companion.observe (Snapshot.kt:503)
  at androidx.compose.runtime.snapshots.SnapshotStateObserver$ObservedScopeMap.observe (SnapshotStateObserver.kt:502)
  at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads (SnapshotStateObserver.kt:258)
  at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release (OwnerSnapshotObserver.kt:133)
  at androidx.compose.ui.node.OwnerSnapshotObserver.observeMeasureSnapshotReads$ui_release (OwnerSnapshotObserver.kt:113)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate.performMeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:1782)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate.access$performMeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:40)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.remeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:696)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.measure-BRTryo0 (LayoutNodeLayoutDelegate.kt:672)
  at androidx.compose.ui.layout.RootMeasurePolicy.measure-3p2s80s (RootMeasurePolicy.kt:38)
  at androidx.compose.ui.node.InnerNodeCoordinator.measure-BRTryo0 (InnerNodeCoordinator.kt:135)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke (LayoutNodeLayoutDelegate.kt:316)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$performMeasureBlock$1.invoke (LayoutNodeLayoutDelegate.kt:315)
  at androidx.compose.runtime.snapshots.Snapshot$Companion.observe (Snapshot.kt:2441)
  at androidx.compose.runtime.snapshots.SnapshotStateObserver$ObservedScopeMap.observe (SnapshotStateObserver.kt:502)
  at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads (SnapshotStateObserver.kt:258)
  at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release (OwnerSnapshotObserver.kt:133)
  at androidx.compose.ui.node.OwnerSnapshotObserver.observeMeasureSnapshotReads$ui_release (OwnerSnapshotObserver.kt:113)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate.performMeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:1782)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate.access$performMeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:40)
  at androidx.compose.ui.node.LayoutNodeLayoutDelegate$MeasurePassDelegate.remeasure-BRTryo0 (LayoutNodeLayoutDelegate.kt:696)
  at androidx.compose.ui.node.LayoutNode.remeasure-_Sx5XlM$ui_release (LayoutNode.kt:1222)
  at androidx.compose.ui.node.MeasureAndLayoutDelegate.doRemeasure-sdFAvZA (MeasureAndLayoutDelegate.kt:367)
  at androidx.compose.ui.node.MeasureAndLayoutDelegate.remeasureOnly (MeasureAndLayoutDelegate.kt:622)
  at androidx.compose.ui.node.MeasureAndLayoutDelegate.measureOnly (MeasureAndLayoutDelegate.kt:420)
  at androidx.compose.ui.platform.AndroidComposeView.onMeasure (AndroidComposeView.android.kt:1370)
  at android.view.View.measure (View.java:28571)
  at androidx.compose.ui.platform.AbstractComposeView.internalOnMeasure$ui_release (ComposeView.android.kt:309)
  at androidx.compose.ui.platform.AbstractComposeView.onMeasure (ComposeView.android.kt:296)
  at android.view.View.measure (View.java:28571)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7390)
  at android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
  at android.view.View.measure (View.java:28571)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7390)
  at android.widget.LinearLayout.measureChildBeforeLayout (LinearLayout.java:1608)
  at android.widget.LinearLayout.measureVertical (LinearLayout.java:878)
  at android.widget.LinearLayout.onMeasure (LinearLayout.java:721)
  at android.view.View.measure (View.java:28571)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7390)
  at android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
  at com.android.internal.policy.DecorView.onMeasure (DecorView.java:1036)
  at android.view.View.measure (View.java:28571)
  at android.view.ViewRootImpl.performMeasure (ViewRootImpl.java:5203)
  at android.view.ViewRootImpl.measureHierarchy (ViewRootImpl.java:3603)
  at android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:3973)
  at android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:3288)
  at android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:11344)
  at android.view.Choreographer$CallbackRecord.run (Choreographer.java:1689)
  at android.view.Choreographer$CallbackRecord.run (Choreographer.java:1698)
  at android.view.Choreographer.doCallbacks (Choreographer.java:1153)
  at android.view.Choreographer.doFrame (Choreographer.java:1079)
  at android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:1646)
  at android.os.Handler.handleCallback (Handler.java:958)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loopOnce (Looper.java:230)
  at android.os.Looper.loop (Looper.java:319)
  at android.app.ActivityThread.main (ActivityThread.java:8919)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:578)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1103)

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