Keeping an eye on this to see when it gets resolved. I’m running into the same issue when I package my game. Running UE 5.0.3, on Windows 11, for what it’s worth. Error message below.
“LogFeaturePack: Error: Error in Feature pack D:/Unreal Games/UE_5.0/FeaturePacks/TP_VirtualRealityBP.upack. Failed to parse manifest: Invalid Json Token. Line: 43 Ch: 4”