Net MAUI websocket çalıştırma hatası

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.WebSockets;
using System.Text;
using System.Threading.Tasks;

namespace MauiApp1.Model
{
public static class WebSocket.
{
public static string checker = Ayarlar.ComputeSha256Hash(Ayarlar.APIKEY + Ayarlar.hostname + "/ws");
public static ClientWebSocket webSocket = new ClientWebSocket();
public static DateTime senddate = DateTime.Now;
public static async Task ConnectToWebsocket()
{
try.
{
webSocket.Options.SetRequestHeader("APIKEY", Ayarlar.APIKEY);
webSocket.Options.SetRequestHeader("Authorization", Ayarlar.HASH);
webSocket.Options.SetRequestHeader("Checker", checker);
await webSocket.ConnectAsync(new Uri(Ayarlar.websocketurl), CancellationToken.None);

 await Task.WhenAll(Receive(webSocket), Send(webSocket));
 }
 catch (Exception ex)
 {
 }
 }
 private static async Task Receive(ClientWebSocket webSocket)
 {
 byte[] buffer = new byte[1024];
 while (webSocket.State == System.Net.WebSockets.WebSocketState.Open)
 {
 try.
 {
 WebSocketReceiveResult result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);

 string a = System.Text.Encoding.UTF8.GetString(buffer, 0, result.Count);
 WebsocketData model = new WebsocketData();
 model = JsonConvert.DeserializeObject<WebsocketData>(a);
 if (model != null && model.Type == "D")
 {
 Depth depthmodel = JsonConvert.DeserializeObject<Depth>(JsonConvert.SerializeObject(model.Content));

 Console.WriteLine(JsonConvert.SerializeObject(depthmodel));

 }
 else if (model != null && model.Type == "T")
 {
 Tick tickmodel = JsonConvert.DeserializeObject<Tick>(JsonConvert.SerializeObject(model.Content));

 Console.WriteLine(JsonConvert.SerializeObject(tickmodel));

 }

 //Console.WriteLine(a);
 }
 catch (Exception ex)
 {
 }
 }
 if (webSocket.State != System.Net.WebSockets.WebSocketState.Open)
 {
 ConnectToWebsocket();
 }
 }

 private static async Task Send(ClientWebSocket webSocket)
 {

 while (webSocket.State == System.Net.WebSockets.WebSocketState.Open)
 {

 if (senddate < DateTime.Now)
 {
 senddate = DateTime.Now.AddMinutes(15);
 string message = "{\"Type\":\"H\",\"Token\":\"" + Ayarlar.HASH + "\"}";

 var encoded = Encoding.UTF8.GetBytes(message);
 var buffer = new ArraySegment<Byte>(encoded, 0, encoded.Length);
 await webSocket.SendAsync(buffer, WebSocketMessageType.Text, true, CancellationToken.None);

 }
 }
 }
}

public MainPage()
{
InitializeComponent();

 WebSocket.ConnectToWebsocket();
}