Cooking stack for UAT error

After trying to cook my game for windows 7 (only blueprint game) I got this error in the output log

this is the full in red message :

UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: begin: stack for UAT
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: === Handled ensure: ===
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error:
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: Ensure condition failed: !DoesContainTransformCurves() || (RawAnimationData.Num()==0 || SourceRawAnimationData.Num() != 0) [File:D:\Build++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\Engine\Private\Animation\AnimSequence.cpp] [Line: 379]
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error:
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: Stack:
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000F00D2786 UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000EFE7123A UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000EFE8B906 UE4Editor-Core.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000D7CCBECB UE4Editor-Engine.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000F2461077 UE4Editor-CoreUObject.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000F244A5F6 UE4Editor-CoreUObject.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000D65AEB8D UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000D647112E UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000D6472473 UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000D647E3B7 UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000D6317D61 UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000D633F391 UE4Editor-UnrealEd.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x000000000500D25F UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x000000000500525A UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x00000000050054AA UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x0000000005012379 UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x0000000005013193 UE4Editor-Cmd.exe!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x000000001D763034 KERNEL32.DLL!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: [Callstack] 0x000000001FC61431 ntdll.dll!UnknownFunction []
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error:
UATHelper: Packaging (Windows (64-bit)): LogOutputDevice: Error: end: stack for UAT