Entity Framework Core migrations failing with "Could not load file or assembly 'System.Threading'"

I've been making some changes to the following open source project: https://github.com/SevenSpikes/api-plugin-for-nopcommerce

I am trying to update IdentityServer4 library referenced in the above project from 2.0.3 to 2.4.0. As part of this process I require the migrations scripts from the previous version to the current. I also wanted to get some experience generating migrations scripts as I have never done it before.

I have tried executing the following command

> dotnet ef migrations add
> InitialIdentityServerPersistedGrantDbMigration -c
> PersistedGrantDbContext -o /Migrations/IdentityServer/PersistedGrantDb --project "C:\localpath\Nop.Plugin.Api.csproj"

based on the following documentation

and when I do so I receive the following error

System.IO.FileLoadException: Could not load file or assembly 'System.Threading, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
   at System.Console.get_IsOutputRedirected()
   at Microsoft.EntityFrameworkCore.Tools.Program.Main(String[] args)

I have attempted to update to the latest version of the Core 2.2 SDK and it doesn't seem to have helped.

Bit stuck and would appreciate some help!