TaxJar plugin causing nop 4.0 to crash

Hi.  I previously reported this under "Other" forum - but maybe this is a better place.  

We've tried uploading the TaxJar plugin on two different occasions, and it has caused our site to crash both times.  Anyone else experience this issue?

Below is the log file...  thoughts?  Is this an issue with the plug in - and can it be fixed?

Thanks!

Application startup exception: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
   at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
   at System.Reflection.RuntimeAssembly.get_DefinedTypes()
   at AutoMapper.ServiceCollectionExtensions.<>c.<AddAutoMapperClasses>b__11_1(Assembly a)
   at System.Linq.Enumerable.<SelectManyIterator>d__17`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at AutoMapper.ServiceCollectionExtensions.AddAutoMapperClasses(IServiceCollection services, Action`1 additionalInitAction, IEnumerable`1 assembliesToScan)
   at AutoMapper.ServiceCollectionExtensions.AddAutoMapper(IServiceCollection services)
   at Nop.Core.Infrastructure.NopEngine.AddAutoMapper(IServiceCollection services, ITypeFinder typeFinder) in E:\Clients\RLinks\Development\PDEV\nopCommerce_4.00_Source\Libraries\Nop.Core\Infrastructure\NopEngine.cs:line 123
   at Nop.Core.Infrastructure.NopEngine.ConfigureServices(IServiceCollection services, IConfigurationRoot configuration) in E:\Clients\RLinks\Development\PDEV\nopCommerce_4.00_Source\Libraries\Nop.Core\Infrastructure\NopEngine.cs:line 197
   at Nop.Web.Framework.Infrastructure.Extensions.ServiceCollectionExtensions.ConfigureApplicationServices(IServiceCollection services, IConfigurationRoot configuration) in E:\Clients\RLinks\Development\PDEV\nopCommerce_4.00_Source\Presentation\Nop.Web.Framework\Infrastructure\Extensions\ServiceCollectionExtensions.cs:line 51
   at Nop.Web.Startup.ConfigureServices(IServiceCollection services) in E:\Clients\RLinks\Development\PDEV\nopCommerce_4.00_Source\Presentation\Nop.Web\Startup.cs:line 44
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.ConfigureServices(IServiceCollection services)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.EnsureApplicationServices()
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
crit: Microsoft.AspNetCore.Hosting.Internal.WebHost[6]
      Application startup exception
      Could not load file or assembly 'RestSharp, Version=105.1.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
   at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
   at System.Reflection.RuntimeAssembly.get_DefinedTypes()
   at AutoMapper.ServiceCollectionExtensions.<>c.<AddAutoMapperClasses>b__11_1(Assembly a)
   at System.Linq.Enumerable.<SelectManyIterator>d__17`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at AutoMapper.ServiceCollectionExtensions.AddAutoMapperClasses(IServiceCollection services, Action`1 additionalInitAction, IEnumerable`1 assembliesToScan)
   at AutoMapper.ServiceCollectionExtensions.AddAutoMapper(IServiceCollection services)
   at Nop.Core.Infrastructure.NopEngine.AddAutoMapper(IServiceCollection services, ITypeFinder typeFinder) in E:\Clients\RLinks\Development\PDEV\nopCommerce_4.00_Source\Libraries\Nop.Core\Infrastructure\NopEngine.cs:line 123
   at Nop.Core.Infrastructure.NopEngine.ConfigureServices(IServiceCollection services, IConfigurationRoot configuration) in E:\Clients\RLinks\Development\PDEV\nopCommerce_4.00_Source\Libraries\Nop.Core\Infrastructure\NopEngine.cs:line 197
   at Nop.Web.Framework.Infrastructure.Extensions.ServiceCollectionExtensions.ConfigureApplicationServices(IServiceCollection services, IConfigurationRoot configuration) in E:\Clients\RLinks\Development\PDEV\nopCommerce_4.00_Source\Presentation\Nop.Web.Framework\Infrastructure\Extensions\ServiceCollectionExtensions.cs:line 51
   at Nop.Web.Startup.ConfigureServices(IServiceCollection services) in E:\Clients\RLinks\Development\PDEV\nopCommerce_4.00_Source\Presentation\Nop.Web\Startup.cs:line 44
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.ConfigureServices(IServiceCollection services)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.EnsureApplicationServices()
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
Hosting environment: Production
Content root path: C:\inetpub\NOP4.0
Now listening on: http://localhost:25433
Application started. Press Ctrl+C to shut down.
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:88/Admin/Plugin/List  
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 63.1418ms 500 text/html; charset=utf-8
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 POST http://127.0.0.1:25433/iisintegration  0
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 0.4572ms 500 text/html; charset=utf-8
Application is shutting down...

We fixed this problem. Please get a new plugin from our marketplace