Here is the error message I encounter:

NullReferenceException: Object reference not set to an instance of an object
at DensitySpawnPopulation+<>cDisplayClass29_0.<GetBaseMapValues>b0 (System.Int32 z) [0x00035] in <e04b59bdec394780b67857f53f247448>:0
at UnityEngine.Parallel+<>cDisplayClass4_0.<For>b0 (System.Int32 thread_id) [0x0001f] in <0a87e37df6844a1388957ee3f5b507ff>:0
at (wrapper managed-to-native) System.Object.icall_wrapper_mono_delegate_end_invoke(object,intptr)
at (wrapper delegate-end-invoke) System.Action`1[System.Int32].end_invoke_voidthis_IAsyncResult(System.IAsyncResult)
at UnityEngine.Parallel.For (System.Int32 fromInclusive, System.Int32 toExclusive, System.Int32 threads, System.Action1[T] action) [0x0008f] in <0a87e37df6844a1388957ee3f5b507ff>:0
at UnityEngine.Parallel.For (System.Int32 fromInclusive, System.Int32 toExclusive, System.Action1[T] action) [0x00007] in <0a87e37df6844a1388957ee3f5b507ff>:0
at DensitySpawnPopulation.GetBaseMapValues (System.Int32 populationRes) [0x0003d] in <e04b59bdec394780b67857f53f247448>:0
at SpawnHandler.UpdateDistributions () [0x00072] in <e04b59bdec394780b67857f53f247448>:0
at ServerMgr.Initialize (System.Boolean loadSave, System.String saveFile, System.Boolean allowOutOfDateSaves, System.Boolean skipInitialSpawn) [0x0004a] in <e04b59bdec394780b67857f53f247448>:0
at Bootstrap+<StartServer>d21.MoveNext () [0x0030c] in <e04b59bdec394780b67857f53f247448>:0
at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00026] in <5f55adde392a4f559fa097c2225879c0>:0

I have attempted several troubleshooting steps, including restarting my computer, verifying game files, and checking for updates, but the problem persists.

Could you please assist me in resolving this issue? Any guidance or suggestions would be greatly appreciated.