Nuget Installation error for .NETFramework

[ajay1685]

Severity Code Description Project File Line Suppression State
Error Could not install package 'OpenSlideNET 1.0.0-preview4-18080601'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.5.2', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.

[yigolden]

The minimum .NET Framework version supported by OpenSlideNET is 4.6.1. Please target this version of .NET Framework.

Will consider to support lower version of .NET Framework in the next version.

[Tititesouris]

Hi, you mention the minimum supported version is 4.6.1, however I'm getting this error:
Could not install package 'OpenSlideNET.NativeStubs 1.0.0-preview4-18080601'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.7.1', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.