Cannot be used with Casbin.NET package > 2.1.1

[dgg]

Hi, we are evaluating casbin for a .NET project that we are starting out.

We want to store policies in a database (thinking about postgres) and using Casbin.NET.Adapter.EFCore v2.1.0 and Npgsql.EntityFrameworkCore.PostgreSQL v8.0.2.

If we are a version of the package Casbin.NET higher that 2.1.1 we get the following exception:

System.EntryPointNotFoundException: Entry point was not found.
         at System.Collections.Generic.IReadOnlyCollection`1.get_Count()
         at Casbin.Persist.Adapter.EFCore.EFCoreAdapter`3.AddPolicyAsync(String section, String policyType, IPolicyValues values)
         at Casbin.Model.DefaultPolicyManager.AddPolicyAsync(IPolicyValues rule)
         at Casbin.InternalEnforcerExtension.InternalAddPolicyAsync(IEnforcer enforcer, String section, String policyType, IPolicyValues values)

Of course we can evaluate the solution with a 5 month-old version, but that would be a showstopper to continue with casbin.

I am not sure what could be the solution for this problem.

Thanks for your help.

[casbin-bot]

@sagilio @sociometry @AsakusaRinne