Svcutil -- อัปเดตเอาต์พุตข้อผิดพลาดไม่สมเหตุสมผล

 dotnet svcutil -u --projectFile "C:\projects\MySolution\MyProject\MyProject.csproj"
Warning: The specified --projectFile option is not expected in the current operational context of the tool!
Error: The --update option requires a project to be specified, please use the --projectFile option to specify the project to use.