My game show me this error :
Object reference not set to an instance of an object
NullReferenceException: Object reference not set to an instance of an object
at Colossal.Logging.UnityLogger.Internal_WriteStream (UnityEngine.Object context, Colossal.Logging.Level level, System.String format, System.Exception exception, System.IO.TextWriter stdStream) [0x0001e] in <deb8569fd9ea41f59f02d04c69584d28>:0
at Colossal.Logging.CustomLogHandler.PostProcessFormat (UnityEngine.LogType logType, Colossal.Logging.Level level, UnityEngine.Object context, System.String format, Colossal.Logging.ILog log, System.Exception exception) [0x000d3] in <deb8569fd9ea41f59f02d04c69584d28>:0
at Colossal.Logging.CustomLogHandler.LogFormat (UnityEngine.LogType logType, UnityEngine.Object context, System.String format, System.Object[] args) [0x0005e] in <deb8569fd9ea41f59f02d04c69584d28>:0
Colossal.Logging.CustomLogHandler:LogException(Exception, Object)
Colossal.Logging.CustomLogHandler:LogFormat(LogType, Object, String, Object[])
UnityEngine.Logger:LogFormat(LogType, String, Object[])
Colossal.Logging.UnityLogger:Log(Level, String, Exception)
Colossal.Logging.UnityLogger

ebug(Object)
FindIt.Systems.PrefabIndexingSystem:RunIndex(Boolean) (at E

rogrammingFindIt-CSIIFindItSystemsPrefabIndexingSystem.cs:192)
FindIt.Systems.PrefabIndexingSystem:OnGameLoadingComplete(Purpose, GameMode) (at E

rogrammingFindIt-CSIIFindItSystemsPrefabIndexingSystem.cs:107)
Game.GameSystemBase:GameLoadingComplete(Purpose, GameMode)
Game.SceneFlow.<Load>d__94:MoveNext()
System.Runtime.CompilerServices.MoveNextRunner:InvokeMoveNext(Object)
System.Threading.ExecutionContext:RunInternal(ExecutionContext, ContextCallback, Object, Boolean)
System.Threading.ExecutionContext:Run(ExecutionContext, ContextCallback, Object, Boolean)
System.Runtime.CompilerServices.MoveNextRunner:Run()
System.Threading.Tasks.AwaitTaskContinuation:InvokeAction(Object)
System.Threading.Tasks.AwaitTaskContinuation:RunCallback(ContextCallback, Object, Task&)
System.Threading.Tasks.SynchronizationContextAwaitTaskContinuation:Run(Task, Boolean)
System.Threading.Tasks.Task:FinishContinuations()
System.Threading.Tasks.Task:FinishStageThree()
System.Threading.Tasks.Task`1:TrySetResult(VoidTaskResult)
System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1:SetResult(VoidTaskResult)
System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1:SetResult(Task`1)
System.Runtime.CompilerServices.AsyncTaskMethodBuilder:SetResult()
Game.SceneFlow.<Execute>d__0:MoveNext()
System.Runtime.CompilerServices.MoveNextRunner:InvokeMoveNext(Object)
System.Threading.ExecutionContext:RunInternal(ExecutionContext, ContextCallback, Object, Boolean)
System.Threading.ExecutionContext:Run(ExecutionContext, ContextCallback, Object, Boolean)
System.Runtime.CompilerServices.MoveNextRunner:Run()
System.Runtime.CompilerServices.YieldAwaiter:RunAction(Object)
UnityEngine.WorkRequest:Invoke()
UnityEngine.UnitySynchronizationContext:Exec()
UnityEngine.UnitySynchronizationContext:ExecuteTasks()