dependency error when upload nuget contain netstandard2.1 dll

[martinmani]

Hi there,

I am getting the below error when pushing the nuget to onprem Klondike nuget server. I use the following command to push the nuget
nuget.exe push c:\temp\nupkgs***.nupkg -Source http://onprem.net:9099 -ApiKey onpremKey -Timeout 600

just wondering what could be the issue and if any resolution?
any help would be greatly appreciated.

Note: I have uploaded Microsoft.AspNetCore.Http to the same server but still getting the error.

Error Details:
System.InvalidOperationException: '' already has a dependency defined for 'Microsoft.AspNetCore.Http'.
at NuGet.Manifest.ValidateDependencySets(IPackageMetadata metadata)
at NuGet.Manifest.Validate(Manifest manifest)
at NuGet.Manifest.ReadFrom(Stream stream, IPropertyProvider propertyProvider, Boolean validateSchema)
at NuGet.LocalPackage.ReadManifest(Stream manifestStream)
at NuGet.OptimizedZipPackage.EnsureManifest()
at NuGet.OptimizedZipPackage..ctor(String fullPackagePath)
at NuGet.Commands.PushCommand.PushPackageCore(String source, String apiKey, PackageServer packageServer, String packageToPush, TimeSpan timeout)
at NuGet.Commands.PushCommand.PushPackage(String packagePath, String source, String apiKey, TimeSpan timeout)
at NuGet.Commands.PushCommand.ExecuteCommand()
at NuGet.Commands.Command.Execute()
at NuGet.Program.Main(String[] args)