Getting below mentioned version issue after cleaning and rebuild the project:-
Severity Code Description Project File Line Suppression State
Error CS1705 Assembly 'Nop.Core' with identity 'Nop.Core, Version=3.9.0.0, Culture=neutral, PublicKeyToken=null' uses 'Autofac, Version=4.6.1.0, Culture=neutral, PublicKeyToken=17863af14b0044da' which has a higher version than referenced assembly 'Autofac' with identity 'Autofac, Version=4.4.0.0, Culture=neutral, PublicKeyToken=17863af14b0044da' Nop.Web E:\DOTNET\Source Code\NopCommerce\Presentation\Nop.Web\CSC 1 Active