Cannot open my merged file - please help

here is the error message


The Sims 4 Studio - Version 3.1.2.4

S4Studio.Data.IO.Package.PackageLoadException: Failed to load C:\Users\[UserName]\Documents\Electronic Arts\The Sims 4\Mods\MERGED\CLOTHING - Female - Body - Merged.package ---> S4Studio.Data.IO.Package.PackageLoadException: Failed to load C:\Users\[UserName]\Documents\Electronic Arts\The Sims 4\Mods\MERGED\CLOTHING - Female - Body - Merged.package ---> S4Studio.Data.IO.Package.NotASimsPackageException: Exception of type 'S4Studio.Data.IO.Package.NotASimsPackageException' was thrown.

at S4Studio.Data.IO.Package.DBPFHeader.Read(Stream stream, IReferenceList resources)

at S4Studio.Data.IO.Package.DBPFPackage.ReadIndexTable()

at S4Studio.Data.IO.Package.DBPFPackage..ctor(String filename, Boolean cache, IPackageEntryStorage storage, IPackageResourceCache cache_storage, IPackageCompressor compressor)

--- End of inner exception stack trace ---

at S4Studio.Data.IO.Package.DBPFPackage..ctor(String filename, Boolean cache, IPackageEntryStorage storage, IPackageResourceCache cache_storage, IPackageCompressor compressor)

at S4Studio.ViewModels.MyCC.ModFolderViewModel..ctor(String path, ICCTreeNode parent, ModManagerViewModel manager)

--- End of inner exception stack trace ---