Got all these error after package attempt

UATHelper: Packaging (Windows): LogInit: Display: LogCook: Error: GlobalDefaultGameMode contains a redirected reference ‘/Game/Blueprints/MainThings/BP_Core_GameMode’. The intended asset will fail to load in a packaged build. Select the intended asset again in Project Settings to fix this issue.

UATHelper: Packaging (Windows): LogInit: Display: LoadErrors: Error: /Game/Blueprints/BP_ThirdPersonGameMode : Failed import for Blueprint /Game/Blueprints/BP_Core_GameMode.BP_Core_GameMode [redirection] in /Game/Blueprints/BP_ThirdPersonGameMode

UATHelper: Packaging (Windows): LogInit: Display: LoadErrors: Error: BlendSpace CrouchMovement has a sample with no/invalid animation. Recommend to remove sample point or set new animation.

UATHelper: Packaging (Windows): LogInit: Display: LoadErrors: Error: BlendSpace ClassicStrafeMovementPistol has a sample with no/invalid animation. Recommend to remove sample point or set new animation.

UATHelper: Packaging (Windows): LogInit: Display: LogDataTable: Error: Missing RowStruct while emptying DataTable ‘/Game/Weapons/Blueprints/Guns/Shootgun/DT_W_Shotgun_Spike.DT_W_Shotgun_Spike’, NeedLoad: ‘false’!

UATHelper: Packaging (Windows): LogInit: Display: LogDataTable: Error: Missing RowStruct while loading DataTable ‘/Game/Weapons/Blueprints/Guns/Shootgun/DT_W_Shotgun_Spike.DT_W_Shotgun_Spike’, NeedLoad: ‘false’!

UATHelper: Packaging (Windows): LogInit: Display: LogDataTable: Error: Missing RowStruct while saving DataTable ‘/Game/Weapons/Blueprints/Guns/Shootgun/DT_W_Shotgun_Spike.DT_W_Shotgun_Spike’, NeedLoad: ‘false’!

Try clicking on the Content folder in content browser and selecting the “fix up redirectors” item from the context menu.