Crashing unity editor and build

Hello, I am facing crash issues in Unity. It was fine a week ago. But currently it is crashing all the time. What is happening and how to fix it?

log:

========== OUTPUTTING STACK TRACE ==================

0x00007FFD8EBDBB0A (KERNELBASE) RaiseException
0x00007FFCDA4ADC0F (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x00007FFCDA4574B2 (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x00007FFCD9A47620 (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x00007FFCD9A4A919 (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x00007FFCD968F2F7 (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x00007FFCD966171C (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x00007FFCD9664CBB (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x00007FFCD88CF11A (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x00007FFCD8883A2A (CesiumForUnityNative-Runtime) DotNet_CesiumForUnity_CesiumPolygonRasterOverlay_CreateImplementation
0x000002511C16B624 (Mono JIT Code) (wrapper managed-to-native) CesiumForUnity.Cesium3DTileset:DotNet_CesiumForUnity_Cesium3DTileset_Update (intptr,CesiumForUnity.Cesium3DTileset/ImplementationHandle)
0x000002511C16B4D3 (Mono JIT Code) [C:\Project\AppMechanic Project\rad_team_suite\Library\PackageCache\com.cesium.unity@1.14.1\Runtime\generated\Reinterop.RoslynSourceGenerator\Cesium3DTileset-generated.cs:654] CesiumForUnity.Cesium3DTileset:Update ()
0x0000024FFFE7CE28 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
0x00007FFD21C3FEB4 (mono-2.0-bdwgc) [C:\build\output\Unity-Technologies\mono\mono\mini\mini-runtime.c:3445] mono_jit_runtime_invoke
0x00007FFD21B7E764 (mono-2.0-bdwgc) [C:\build\output\Unity-Technologies\mono\mono\metadata\object.c:3066] do_runtime_invoke
0x00007FFD21B7E8FC (mono-2.0-bdwgc) [C:\build\output\Unity-Technologies\mono\mono\metadata\object.c:3113] mono_runtime_invoke
0x00007FF7BA71FF04 (Unity) scripting_method_invoke
0x00007FF7BA6FF704 (Unity) ScriptingInvocation::Invoke
0x00007FF7BA6E8804 (Unity) MonoBehaviour::CallMethodIfAvailable
0x00007FF7BA6E88F2 (Unity) MonoBehaviour::CallUpdateMethod
0x00007FF7BA1D3B8B (Unity) BaseBehaviourManager::CommonUpdate
0x00007FF7BA1DAB6A (Unity) BehaviourManager::Update
0x00007FF7BA3EDC3D (Unity) InitPlayerLoopCallbacks'::2’::UpdateScriptRunBehaviourUpdateRegistrator::Forward
0x00007FF7BA3D429A (Unity) ExecutePlayerLoop
0x00007FF7BA3D4426 (Unity) ExecutePlayerLoop
0x00007FF7BA3DA4E9 (Unity) PlayerLoop
0x00007FF7BB33C099 (Unity) PlayerLoopController::UpdateScene
0x00007FF7BB33A29B (Unity) Application::TickTimer
0x00007FF7BB78F67A (Unity) MainMessageLoop
0x00007FF7BB793F4B (Unity) WinMain
0x00007FF7BCB5B05E (Unity) __scrt_common_main_seh
0x00007FFD8FE2E8D7 (KERNEL32) BaseThreadInitThunk
0x00007FFD9173BF2C (ntdll) RtlUserThreadStart

Please see here:

Hello @Kevin_Ring, I was going to update it. But it is not showing the latest version here which you mentioned “v1.15.3”.

using unity 2021.3.19

Hi @Piyush_Ydv,

v1.14.1 was the last version to support Unity 2021.3. Later versions require Unity 2022.3 or later. Are you able to upgrade your Unity version?