Nuget Error: Unexpected character encountered while parsing value:

Getting error while running command in VS 2019 Package manager console

Command Used: nuget install runtime.win-x64.microsoft.netcore.app -Source https://api.nuget.org/v3/index.json

PM> nuget install runtime.win-x64.microsoft.netcore.app -Source https://api.nuget.org/v3/index.jsonFeeds used:https://api.nuget.org/v3/index.json

Installing package 'runtime.win-x64.microsoft.netcore.app' to 'C:\Users\DF\source\RT\DFG\RET\sample.CACHE https://api.nuget.org/v3/registration5-gz-semver2/runtime.win-x64.microsoft.netcore.app/index.jsonWARNING: An invalid cache entry was found for URL 'https://api.nuget.org/v3/registration5-gz-semver2/runtime.win-x64.microsoft.netcore.app/index.json' and will be replaced.Unexpected character encountered while parsing value: <. Path '', line 0, position 0.GET https://api.nuget.org/v3/registration5-gz-semver2/runtime.win-x64.microsoft.netcore.app/index.jsonOK https://api.nuget.org/v3/registration5-gz-semver2/runtime.win-x64.microsoft.netcore.app/index.json 255msnuget : An error occurred while retrieving package metadata for 'runtime.win-x64.microsoft.netcore.app' from source 'nuget.org'.At line:1 char:1

• nuget install runtime.win-x64.microsoft.netcore.app -Source https://a ...

• + CategoryInfo          : NotSpecified: (An error occurr...ce 'nuget.org'.:String) [], RemoteException+ FullyQualifiedErrorId : NativeCommandErrorUnexpected character encountered while parsing value: <. Path '', line 0, position 0.