Game crashes when "unable to place unit"

[junefish]

Is there an existing issue for this?

• I have searched the existing issues

Game Version

4.14.3

Describe the bug

Unciv crashes with error message

**Platform:** Android
**Version:** 4.14.3 (Build 1,066)
**Rulesets:** [Policy mod, Civ V - Vanilla, Latin American_Civs, Ancient Civilizations, Brave New World, Civ V - Gods & Kings, Medieval Civilizations, Better ruins]
**Last Screen:** com.unciv.ui.screens.worldscreen.WorldScreen
--------------------------------
Device Model: A063
API Level: 34
System Memory: 7258 MB
    Available (used by Kernel): 1247 MB
    System Low Memory state: false
    Java heap limit: 512 MB
    Java heap free: 75 MB
--------------------------------
**Message:**
java.lang.Exception: Unit Worker of Celts at Tile @(36.0,9.0), Tundra, Great Archaeologist - Celts can't be put in tile Tile @(36.0,9.0), Tundra, Great Archaeologist - Celts!
	at com.unciv.logic.map.mapunit.MapUnit.putInTile(MapUnit.kt:892)
	at com.unciv.logic.map.mapunit.movement.UnitMovement.swapMoveToTile(UnitMovement.kt:566)
	at com.unciv.logic.automation.unit.WorkerAutomation.automateWorkerAction(WorkerAutomation.kt:90)
	at com.unciv.logic.automation.unit.WorkerAutomation.automateWorkerAction$default(WorkerAutomation.kt:74)
	at com.unciv.logic.automation.unit.CivilianUnitAutomation.automateCivilianUnit(CivilianUnitAutomation.kt:38)
	at com.unciv.logic.automation.unit.UnitAutomation.automateUnitMoves(UnitAutomation.kt:176)
	at com.unciv.logic.automation.civilization.NextTurnAutomation.automateUnits(NextTurnAutomation.kt:429)
	at com.unciv.logic.automation.civilization.NextTurnAutomation.automateCivMoves(NextTurnAutomation.kt:78)
	at com.unciv.logic.automation.civilization.NextTurnAutomation.automateCivMoves$default(NextTurnAutomation.kt:38)
	at com.unciv.logic.civilization.managers.TurnManager.automateTurn(TurnManager.kt:344)
	at com.unciv.logic.GameInfo.nextTurn(GameInfo.kt:395)
	at com.unciv.ui.screens.worldscreen.WorldScreen$nextTurn$1.invokeSuspend(WorldScreen.kt:585)
	at com.unciv.ui.screens.worldscreen.WorldScreen$nextTurn$1.invoke(Unknown Source:8)
	at com.unciv.ui.screens.worldscreen.WorldScreen$nextTurn$1.invoke(Unknown Source:4)
	at com.unciv.utils.ConcurrencyKt$launchCrashHandling$1.invokeSuspend(Concurrency.kt:89)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
	at com.unciv.utils.Dispatchers$CrashHandlingDispatcher$dispatch$1.invoke(Concurrency.kt:190)
	at com.unciv.utils.Dispatchers$CrashHandlingDispatcher$dispatch$1.invoke(Concurrency.kt:190)
	at com.unciv.ui.crashhandling.CrashHandlingExtensionsKt$wrapCrashHandling$1.invoke(CrashHandlingExtensions.kt:17)
	at com.unciv.ui.crashhandling.CrashHandlingExtensionsKt$wrapCrashHandlingUnit$1.invoke(CrashHandlingExtensions.kt:33)
	at com.unciv.ui.crashhandling.CrashHandlingExtensionsKt$wrapCrashHandlingUnit$1.invoke(CrashHandlingExtensions.kt:33)
	at com.unciv.utils.Dispatchers$CrashHandlingDispatcher.dispatch$lambda$0(Concurrency.kt:190)
	at com.unciv.utils.Dispatchers$CrashHandlingDispatcher.$r8$lambda$L3K1aau81hhVdGYYei_E7yWI2wU(Unknown Source:0)
	at com.unciv.utils.Dispatchers$CrashHandlingDispatcher$$ExternalSyntheticLambda0.run(D8$$SyntheticClass:0)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
	at java.lang.Thread.run(Thread.java:1012)

**Save Mods:**
[Civ V - Gods & Kings, Ancient Civilizations, Better ruins, Brave New World, Medieval Civilizations, Policy mod]

Steps to Reproduce

Click "Next Turn" on turn 351

Screenshots

No response

Link to save file

https://hastebin.skyra.pw/owadiwulos.bash

Operating System

Android

Additional Information

I've tried loading an autosave from a few turns earlier multiple times, to have time to deliberately clear units away from all Tundra tiles near city centers, but it always happens on turn 351.