Im trying to package my game and i got this error

UATHelper: Packaging (Windows): LogInit: Display: LogUnrealSOLNET: Error: UnrealSOLNET::Module::StartupModule: Host library loading failed!
UATHelper: Packaging (Windows): LogInit: Display: LogSteamAudio: Warning: The Steam Audio plugin is deprecated and will be removed in a future engine release. Get Valve’s version here: Getting Started — Steam Audio Unreal Engine Integration documentation
UATHelper: Packaging (Windows): LogInit: Display: LogTemp: Warning: Registering Metasound Cos Node
UATHelper: Packaging (Windows): LogInit: Display: LogTemp: Warning: Registering Metasound Reciprocal Node
UATHelper: Packaging (Windows): LogInit: Display: LogTemp: Warning: Registering Metasound TruncFloat Node
UATHelper: Packaging (Windows): LogInit: Display: LogTemp: Warning: Registering Metasound Wrap Node
UATHelper: Packaging (Windows): LogInit: Display: LogTemp: Warning: enabling controller
UATHelper: Packaging (Windows): LogInit: Display: LogTemp: Warning: character constructor
UATHelper: Packaging (Windows): LogInit: Display: LogTemp: Warning: Mesh Loader Constructor
UATHelper: Packaging (Windows): LogInit: Display: LogTemp: Warning: Pak Manager default constructor
UATHelper: Packaging (Windows): LogInit: Display: LogPython: Warning: ‘MakeOptionsData.bParentActor’ and ‘MakeOptionsData.ParentActor’ have the same name (parent_actor) when exposed to Python. Rename one of them using ‘ScriptName’ meta-data (or ‘ScriptMethod’ or ‘ScriptConstant’ for extension functions).
UATHelper: Packaging (Windows): LogInit: Display: LogPython: Warning: ‘MakeOptionsData.bLocation’ and ‘MakeOptionsData.Location’ have the same name (location) when exposed to Python. Rename one of them using ‘ScriptName’ meta-data (or ‘ScriptMethod’ or ‘ScriptConstant’ for extension functions).
UATHelper: Packaging (Windows): LogInit: Display: LogPython: Warning: ‘MakeOptionsData.bRotation’ and ‘MakeOptionsData.Rotation’ have the same name (rotation) when exposed to Python. Rename one of them using ‘ScriptName’ meta-data (or ‘ScriptMethod’ or ‘ScriptConstant’ for extension functions).
UATHelper: Packaging (Windows): LogInit: Display: LogPython: Warning: ‘MakeOptionsData.bScaleMultiplier’ and ‘MakeOptionsData.ScaleMultiplier’ have the same name (scale_multiplier) when exposed to Python. Rename one of them using ‘ScriptName’ meta-data (or ‘ScriptMethod’ or ‘ScriptConstant’ for extension functions).
UATHelper: Packaging (Windows): LogInit: Display: LogCook: Warning: Unable to find package for cooking /Engine/Maps/Entry. Instigator: { GameDefaultObject: ServerDefaultMap }.
UATHelper: Packaging (Windows): LogInit: Display: LogUObjectGlobals: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\Levels\Objects\BP\ControlInventario.uasset: Failed to load ‘/Game/Levels/ControlInventario’: Can’t find file.
UATHelper: Packaging (Windows): LogInit: Display: LogLinker: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\Levels\Objects\BP\ControlInventario.uasset: VerifyImport: Failed to load package for import object ‘Package /Game/Levels/ControlInventario’
UATHelper: Packaging (Windows): LogInit: Display: LogWebSockets: Warning: FLwsWebSocket[1]::Connect: State is not None (StartConnecting), unable to start connecting!
UATHelper: Packaging (Windows): LogInit: Display: LogUObjectGlobals: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\FirstPerson\Blueprints\BP_FirstPersonProjectile.uasset: Failed to load ‘/Game/FPWeapon/Mesh/FirstPersonProjectileMesh’: Can’t find file.
UATHelper: Packaging (Windows): LogInit: Display: LogLinker: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\FirstPerson\Blueprints\BP_FirstPersonProjectile.uasset: VerifyImport: Failed to load package for import object ‘Package /Game/FPWeapon/Mesh/FirstPersonProjectileMesh’
UATHelper: Packaging (Windows): LogInit: Display: LogBlueprint: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\Levels\Widgets\UW_Options.uasset: [Compiler] On Value Changed (SpinBox_231) does not have a valid matching component!
UATHelper: Packaging (Windows): LogInit: Display: LogUObjectGlobals: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\FirstPerson\Blueprints\BP_Weapon_Component.uasset: Failed to load ‘/Game/FPWeapon/Audio/FirstPersonTemplateWeaponFire02’: Can’t find file.
UATHelper: Packaging (Windows): LogInit: Display: LogLinker: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\FirstPerson\Blueprints\BP_Weapon_Component.uasset: VerifyImport: Failed to load package for import object ‘Package /Game/FPWeapon/Audio/FirstPersonTemplateWeaponFire02’
UATHelper: Packaging (Windows): LogInit: Display: LogUObjectGlobals: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\FirstPerson\Blueprints\BP_Weapon_Component.uasset: Failed to load ‘/Game/FPWeapon/Mesh/SK_FPGun’: Can’t find file.
UATHelper: Packaging (Windows): LogInit: Display: LogLinker: Warning: [AssetLog] C:\Users\Alumno\Documents\Unreal Projects\MyProject2\Content\FirstPerson\Blueprints\BP_Weapon_Component.uasset: VerifyImport: Failed to load package for import object ‘Package /Game/FPWeapon/Mesh/SK_FPGun’
UATHelper: Packaging (Windows): LogInit: Display: LoadErrors: Warning: CreateExport: Failed to load Outer for resource ‘DefaultSceneRoot’: ControlInventario_C /Game/Levels/Level1.Level1:PersistentLevel.ControlInventario_C_1
UATHelper: Packaging (Windows): LogInit: Display:
UATHelper: Packaging (Windows): LogInit: Display: Failure - 1 error(s), 40 warning(s)
UATHelper: Packaging (Windows): LogInit: Display:
UATHelper: Packaging (Windows): Execution of commandlet took: 58.73 seconds
UATHelper: Packaging (Windows): LogTemp: Warning: Mesh Loader Destructor
UATHelper: Packaging (Windows): LogTemp: Warning: Mesh Loader Destructor
UATHelper: Packaging (Windows): LogTemp: Warning: Mesh Loader Destructor
UATHelper: Packaging (Windows): LogTemp: Warning: Mesh Loader Destructor
UATHelper: Packaging (Windows): LogTemp: Warning: Mesh Loader Destructor
UATHelper: Packaging (Windows): LogWebSockets: Warning: FLwsWebSocket[1]::Connect: State is not None (StartConnecting), unable to start connecting!
UATHelper: Packaging (Windows): ChromaSDKPlugin failed to load!
UATHelper: Packaging (Windows): LogStudioTelemetry: Display: Shutdown StudioTelemetry Module
UATHelper: Packaging (Windows): Took 67,93s to run UnrealEditor-Cmd.exe, ExitCode=1
UATHelper: Packaging (Windows): Cook failed.
UATHelper: Packaging (Windows): (see C:\Users\Alumno\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.4\Log.txt for full exception trace)
UATHelper: Packaging (Windows): AutomationTool executed for 0h 1m 11s
UATHelper: Packaging (Windows): AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure)
UATHelper: Packaging (Windows): BUILD FAILED
PackagingResults: Error: Unknown Cook Failure
LogDerivedDataCache: C:/Users/Alumno/AppData/Local/UnrealEngine/Common/DerivedDataCache: Maintenance finished in +00:00:00.000 and deleted 0 files with total size 0 MiB and 0 empty folders. Scanned 0 files in 1 folders with total size 0 MiB.

Greetings @SORIANOO09!

Your included logs suggest cook/graphical conflict, and warnings related with multiple meshes. Let’s try a few possible methods for resolution:

  • Update your nVIDIA drivers, make sure you are picking the “Clean Installation” option, as well as going for the “Developer” drivers, as these have more stable settings for engine work.

  • If your current project was on a previous version of Unreal, and its now updated to 5.5, rendering settings from the previous build could be causing a conflict. In order to reset them, please search for DefaultGame.ini file, open it wirh a notepad, and delete all settings under the header [/Script/Engine.RendererSettings]

  • Uncheck all SM5 in the project settings (Project Settings → Platforms → Windows)

  • Remove and reinstall any mesh packs recently added to your UE

Awesome suggestions! Thank you!