azure-webjobs-sdk: Couldn't load assembly System.Data.SqlClient: System.AppDomain conflict in assemblies

I’m trying to use System.Data.SqlClient to work with Azure SQL, but I get exception during local testing.

Repro steps

1. Clone repository: https://github.com/PoisonousJohn/CSharpHttpCore
2. Launch project in VS or VSCode
3. Execute function: http://localhost:7071/api/HttpTriggerCSharp

Expected behavior

Function fires without errors

Actual behavior

I get exception during function execution:

Exception during runtime resolution of assembly 'System.Data.SqlClient, Version=4.2.0.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a': 
'System.InvalidCastException: [A]System.AppDomain cannot be cast to [B]System.AppDomain. 
Type A originates from 'System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' in the context 'Default' at location 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\2.0.3\System.Private.CoreLib.dll'. 
Type B originates from 'System.Runtime.Extensions, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' in the context 'Default' at location 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\2.0.3\System.Runtime.Extensions.dll'.

Known workarounds

No any workaround for me

Related information

Provide any related information

• `-- azure-functions-core-tools@2.0.1-beta.22
• https://github.com/PoisonousJohn/CSharpHttpCore