This is what I get when I try to package my project. I’m very new and this is my first game so I don’t know what this means. Please help me. 
LogSlate: Window ‘Output Log’ being destroyed
LogUObjectHash: Compacting FUObjectHashTables data took 0.33ms
LogMainFrame: Project requires temp target (OnlineSubsystemSteam plugin is enabled)
LogLauncherProfile: Unable to use promoted target - …/…/…/…/…/…/Users/15713/Desktop/SA_Rev/Binaries/Win64/UE4Game.target does not exist.
UATHelper: Packaging (Windows (64-bit)): Running AutomationTool…
UATHelper: Packaging (Windows (64-bit)): Parsing command line: -ScriptsForProject=C:/Users/15713/Desktop/SA_Rev/SA_Rev.uproject BuildCookRun -nocompileeditor -installed -nop4 -project=C:/Users/15713/Desktop/SA_Rev/SA_Rev.uproject -cook -stage -archive -archivedirectory=C:/Users/15713/Desktop -package -ue4exe=“C:\Program Files\Epic Games\UE_4.27\Engine\Binari
es\Win64\UE4Editor-Cmd.exe” -clean -compressed -SkipCookingEditorContent -ddc=InstalledDerivedDataBackendGraph -pak -prereqs -nodebuginfo -targetplatform=Win64 -build -clientconfig=Development -utf8output
UATHelper: Packaging (Windows (64-bit)): WARNING: Error while enumerating Visual Studio toolchains
UATHelper: Packaging (Windows (64-bit)): WARNING: Assuming no compilation capability.
PackagingResults: Warning: Error while enumerating Visual Studio toolchains
PackagingResults: Warning: Assuming no compilation capability.
UATHelper: Packaging (Windows (64-bit)): Setting up ProjectParams for C:\Users\15713\Desktop\SA_Rev\SA_Rev.uproject
UATHelper: Packaging (Windows (64-bit)): WARNING: The ‘Developer’ module type has been deprecated in 4.24. Use ‘DeveloperTool’ for modules that can be loaded by game/client/server targets in non-shipping configurations, or ‘UncookedOnly’ for modules that should only be loaded by uncooked editor and program targets (eg. modules containing blueprint nodes)
UATHelper: Packaging (Windows (64-bit)): C:\Program Files\Epic Games\UE_4.27\Engine\Plugins\VRM4U\VRM4U.uplugin: warning: The ‘Developer’ module type has been deprecated in 4.24.
PackagingResults: Warning: The ‘Developer’ module type has been deprecated in 4.24. Use ‘DeveloperTool’ for modules that can be loaded by game/client/server targets in non-shipping configurations, or ‘UncookedOnly’ for modules that should only be loaded by uncooked editor and program targets (eg. modules containing blueprint nodes)
PackagingResults: Warning: The ‘Developer’ module type has been deprecated in 4.24.
UATHelper: Packaging (Windows (64-bit)): SA_Rev.uproject requires a temporary target.cs to be generated (OnlineSubsystemSteam plugin is enabled)
UATHelper: Packaging (Windows (64-bit)): ERROR: C:\Users\15713\Desktop\SA_Rev\SA_Rev.uproject does not look like uproject file but no targets have been found!
UATHelper: Packaging (Windows (64-bit)): (see C:\Users\15713\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.27\Log.txt for full exception trace)
PackagingResults: Error: C:\Users\15713\Desktop\SA_Rev\SA_Rev.uproject does not look like uproject file but no targets have been found!
UATHelper: Packaging (Windows (64-bit)): AutomationTool exiting with ExitCode=1 (Error_Unknown)
UATHelper: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults: Error: Unknown Error