Added logging for server pushed error messages

Mexc.Net/Clients/SpotApi/MexcSocketClientSpotApi.cs

@@ -35,6 +35,7 @@ public class MexcSocketClientSpotApi : SocketApiClient, IMexcSocketClientSpotApi
         internal MexcSocketClientSpotApi(ILogger logger, MexcSocketOptions options) :
             base(logger, options.Environment.SpotSocketAddress, options, options.SpotOptions)
         {
+            AddSystemSubscription(new MexcErrorSubscription(_logger));
         }
 
         #endregion

Mexc.Net/Objects/Sockets/Subscriptions/MexcErrorSubscription.cs

@@ -0,0 +1,25 @@
+using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Sockets;
+using CryptoExchange.Net.Sockets;
+using Mexc.Net.Objects.Sockets.Models;
+using Microsoft.Extensions.Logging;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Mexc.Net.Objects.Sockets.Subscriptions
+{
+    internal class MexcErrorSubscription : SystemSubscription<MexcResponse>
+    {
+        public override HashSet<string> ListenerIdentifiers { get; set; } = new HashSet<string> { "0" };
+
+        public MexcErrorSubscription(ILogger logger) : base(logger, false)
+        {
+        }
+
+        public override Task<CallResult> HandleMessageAsync(SocketConnection connection, DataEvent<MexcResponse> message)
+        {
+            _logger.LogError("Server Error: {Error}", message.Data.Message);
+            return Task.FromResult(new CallResult(null));
+        }
+    }
+}