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[ERROR] Unknown Build failure.

Fiirst let me introduce myself , i am luca 22 years old and i have been fiddling around with unreal engine for a few years now on and off , but for the last month i have been putting in 4-6 hours a day working on this project wich i am unable to package.
please treat me like a unreal rookie because while i know some things about the engine the packaging of a project is completely new for me.
this project is also made in blueprints only if that is of any importance

here is the rundown:

Im trying to package my project but im getting a string of error messages in the cooking process of the level.

i have already searched the forums for some of the errors i am getting and tried several options like only cooking the level i am currently working on but it doesn’t seem to change anything.

here is the last part of the output log i am getting

UATHelper: Packaging (Windows (64-bit)):
UATHelper: Packaging (Windows (64-bit)): Script Stack (0 frames):
UATHelper: Packaging (Windows (64-bit)):
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: Assertion failed: PerInstanceRenderData.IsValid() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/InstancedStaticMesh.cpp] [Line: 1951]
UATHelper: InstanceRenderData.IsValid() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/InstancedStaticMesh.cpp] [Line: 1951]
UATHelper: e/Engine/Private/InstancedStaticMesh.cpp] [Line: 1951]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: Assertion failed: PerInstanceRenderData.IsValid() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/InstancedStaticMesh.cpp] [Line: 1951]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error:
PackagingResults: Error: begin: stack for UAT
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffcad74a839 KERNELBASE.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc4a4ca9e6 UE4Editor-Core.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc4a4cde88 UE4Editor-Core.dll!UnknownFunction ]
PackagingResults: Error: === Critical error: ===
PackagingResults: Error: Assertion failed: PerInstanceRenderData.IsValid() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/InstancedStaticMesh.cpp] [Line: 1951]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc4a282cbd UE4Editor-Core.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffcad74a839 KERNELBASE.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc4a4ca9e6 UE4Editor-Core.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc4a20fd83 UE4Editor-Core.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc4a4cde88 UE4Editor-Core.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc4a282cbd UE4Editor-Core.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc4a212100 UE4Editor-Core.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc4a20fd83 UE4Editor-Core.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc4a212100 UE4Editor-Core.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc44b9acd9 UE4Editor-UnrealEd.dll!UnknownFunction ]
UATHelper: ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc4739b054 UE4Editor-Engine.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc49c714a9 UE4Editor-CoreUObject.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc49c933f8 UE4Editor-CoreUObject.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc49c79baa UE4Editor-CoreUObject.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc44ce4175 UE4Editor-UnrealEd.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc44b8d952 UE4Editor-UnrealEd.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc44b8fd0c UE4Editor-UnrealEd.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc44b9acd9 UE4Editor-UnrealEd.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc44a32778 UE4Editor-UnrealEd.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc47412710 UE4Editor-Engine.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffc44a5801f UE4Editor-UnrealEd.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc47412299 UE4Editor-Engine.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc4739b054 UE4Editor-Engine.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ff7e2a22fb0 UE4Editor-Cmd.exe!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc49c714a9 UE4Editor-CoreUObject.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc49c933f8 UE4Editor-CoreUObject.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc49c79baa UE4Editor-CoreUObject.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc44ce4175 UE4Editor-UnrealEd.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ff7e2a1c17c UE4Editor-Cmd.exe!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ff7e2a1c4ca UE4Editor-Cmd.exe!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc44b8d952 UE4Editor-UnrealEd.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc44b8fd0c UE4Editor-UnrealEd.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ff7e2a2ceae UE4Editor-Cmd.exe!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc44b9acd9 UE4Editor-UnrealEd.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc44a32778 UE4Editor-UnrealEd.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffc44a5801f UE4Editor-UnrealEd.dll!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ff7e2a22fb0 UE4Editor-Cmd.exe!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ff7e2a2ede2 UE4Editor-Cmd.exe!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ff7e2a1c17c UE4Editor-Cmd.exe!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ff7e2a1c4ca UE4Editor-Cmd.exe!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ff7e2a2ceae UE4Editor-Cmd.exe!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ff7e2a2ede2 UE4Editor-Cmd.exe!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffcaf397bd4 KERNEL32.DLL!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: [Callstack] 0x00007ffcb01aced1 ntdll.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: end: stack for UAT
PackagingResults: Error: [Callstack] 0x00007ffcaf397bd4 KERNEL32.DLL!UnknownFunction ]
PackagingResults: Error: [Callstack] 0x00007ffcb01aced1 ntdll.dll!UnknownFunction ]
PackagingResults: Error: end: stack for UAT
UATHelper: Packaging (Windows (64-bit)): Took 15,0179424s to run UE4Editor-Cmd.exe, ExitCode=3
UATHelper: Packaging (Windows (64-bit)): ERROR: Cook failed.
UATHelper: Packaging (Windows (64-bit)): (see C:\Users\duyen\AppData\Roaming\Unreal Engine\AutomationTool\Logs\D+Unreal+Engine+UE_4.24\Log.txt for full exception trace)
PackagingResults: Error: Cook failed.
UATHelper: Packaging (Windows (64-bit)): AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure)
UATHelper: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults: Error: Unknown Cook Failure
LogSlate: Window ‘Output Log’ being destroyed
LogSlate: Window ‘Output Log’ being destroyed

If anyone is able to help me it would be much appreciated

I am not familiar with the error listed, I am just here to suggest a quick search on the answerhub if you haven’t already.
While it may not the exact specific error you have received, it will hopefully give you some and advice and/or an idea of what to look into.