fix serilog error

src/Services/Identity/Identity.API/Program.cs

@@ -63,7 +63,7 @@ Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
         .Enrich.FromLogContext()
         .WriteTo.Console()
         .WriteTo.Seq(string.IsNullOrWhiteSpace(seqServerUrl) ? "http://seq" : seqServerUrl)
-        .WriteTo.Http(string.IsNullOrWhiteSpace(logstashUrl) ? "http://localhost:8080" : logstashUrl)
+        .WriteTo.Http(string.IsNullOrWhiteSpace(logstashUrl) ? "http://localhost:8080" : logstashUrl,null)
         .ReadFrom.Configuration(configuration)
         .CreateLogger();
 }