Error in using Razor engine in Console app

[michaelsync]

I wanted to use the Liquid template but I run into this issue #294
So I am trying with Razor. I have the following code to send the email with Razor template from .NET Core console app. (Not MVC or No DI)

 var model = new { Name = "LUKE", Numbers = new[] { "1", "2", "3" } };

            var template = @"    
                            Hi @Model.Name here is a list @foreach(var i in Model.Numbers) { @i }
                        ";


            SmtpClient client = new SmtpClient();
            client.UseDefaultCredentials = true;
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            client.Host = smtpServer;
            client.Port = 25;

            FluentEmail.Core.Email.DefaultSender = new SmtpSender(client);            
            FluentEmail.Core.Email.DefaultRenderer = new RazorRenderer();

            await FluentEmail.Core.Email
                .From(sender)
                .To(reportingEmail)
                .Subject(subject)
                .UsingTemplate(template, model)
                .SendAsync();

The error message.

System.InvalidOperationException: Cannot find compilation library location for package 'System.Text.Json'
   at Microsoft.Extensions.DependencyModel.CompilationLibrary.ResolveReferencePaths(ICompilationAssemblyResolver resolver, List`1 assemblies)
   at Microsoft.Extensions.DependencyModel.CompilationLibrary.ResolveReferencePaths()
   at RazorLight.Compilation.DefaultMetadataReferenceManager.<>c.<Resolve>b__12_1(CompilationLibrary library)
   at System.Linq.Enumerable.SelectManySingleSelectorIterator`2.MoveNext()
   at RazorLight.Compilation.DefaultMetadataReferenceManager.Resolve(Assembly assembly, DependencyContext dependencyContext)
   at RazorLight.Compilation.DefaultMetadataReferenceManager.Resolve(Assembly assembly)
   at RazorLight.Compilation.RoslynCompilationService.EnsureOptions()
   at RazorLight.Compilation.RoslynCompilationService.get_ParseOptions()
   at RazorLight.Compilation.RoslynCompilationService.CreateSyntaxTree(SourceText sourceText)
   at RazorLight.Compilation.RoslynCompilationService.CreateCompilation(String compilationContent, String assemblyName)
   at RazorLight.Compilation.RoslynCompilationService.CompileAndEmit(IGeneratedRazorTemplate razorTemplate)
   at RazorLight.Compilation.RazorTemplateCompiler.CompileAndEmit(RazorLightProjectItem projectItem)
   at RazorLight.Compilation.RazorTemplateCompiler.OnCacheMissAsync(String templateKey)
--- End of stack trace from previous location where exception was thrown ---
   at RazorLight.EngineHandler.CompileTemplateAsync(String key)
   at RazorLight.EngineHandler.CompileRenderAsync[T](String key, T model, ExpandoObject viewBag)
   at CallSite.Target(Closure , CallSite , Object )
   at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
   at FluentEmail.Razor.RazorRenderer.ParseAsync[T](String template, T model, Boolean isHtml)
   at FluentEmail.Razor.RazorRenderer.FluentEmail.Core.Interfaces.ITemplateRenderer.Parse[T](String template, T model, Boolean isHtml)
   at FluentEmail.Core.Email.UsingTemplate[T](String template, T model, Boolean isHtml)

I already have Newtonsoft.Json package but because of this error, I also installed "Install-Package System.Text.Json -Version 6.0.0" too. but still getting the same error.