FFMpegConverter instance is not created from NReco.VideoConverter.dll version 1.1.2

I was trying to use NReco.VideoConverter.dll assembly in my .NET CORE 2.0 but FFMpegConverter instance is not created. I am getting below exception. Can you look into this and guide me how can I make an instance of FFMpegConverter using NReco.VideoConverter.dll and its version is 1.1.2.

system.TypeLoadException occurred HResult=0x80131522 Message=Could not load type 'System.Web.HttpContext' from assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. Source=Cannot evaluate the exception source

Uninstall-Package NReco.VideoConverter from Nuget Package manager Console. Then:

Install-Package NReco.VideoConverter.LT -Version 1.1.2