To fix this issue you need to run the npm command to install the MS Extension.
If you are getting this error:
‘ILoggerFactory’ does not contain a definition for ‘AddLog4Net’ and no accessible extension method ‘AddLog4Net’ accepting a first argument of type ‘ILoggerFactory’ could be found (are you missing a using directive or an assembly reference?)
You will need to add this extension to our project: [ link ]
Run this NUGET Command from the Package Manager Console in Visual Studio.