empty message error fixed

NemAnCore/Pages/FetchData.razor

         var token = await localStorage.GetItemAsync<string>("token");
         string refreshT = await localStorage.GetItemAsync<string>("refresh_token");
 
-        TokenMessage tokenM = new TokenMessage{Token = token, RefreshToken = refreshT};
-       
+        TokenMessage tokenM = new TokenMessage { Token = token, RefreshToken = refreshT };
+
         SearchRequest request = new() { Query = "aitch", Type = "track", Token = token };
-        SearchResponse searchResponse = await SearchService.GetListSearchAsync(request);
 
-         if (searchResponse.ResponseMsg == System.Net.HttpStatusCode.Unauthorized)
+        try
         {
-             string? tempToken = await SpotifyHelper.TryRefreshToken(AuthService, tokenM, localStorage);
-             token =  tempToken == null ? token : tempToken;
+            SearchResponse searchResponse = await SearchService.GetListSearchAsync(request);
+
+            if (searchResponse.ResponseMsg == System.Net.HttpStatusCode.Unauthorized)
+            {
+                string? tempToken = await SpotifyHelper.TryRefreshToken(AuthService, tokenM, localStorage);
+                token = tempToken == null ? token : tempToken;
+            }
         }
+        catch (RpcException e)
+        {
+            if (e.StatusCode == StatusCode.Cancelled)
+            {
+                return;
+            }
+            throw;
+        }
+
     }
 
 

NemAnCore/Pages/Home.razor

 @page "/home"
+@using Grpc.Core
 @using GrpcShared.DTO
 @using GrpcShared.DTO.Track
 @using NemAnBlazor.Services.Interfaces
+@using System.Net
 @inject Blazored.LocalStorage.ILocalStorageService localStorage
 @inject IStatsClientService spotifyService
 @inject ITrackClientService trackService
 @code {
     protected override async Task OnInitializedAsync()
     {
+
         string tokenS = await localStorage.GetItemAsync<string>("token");
         string refreshT = await localStorage.GetItemAsync<string>("refresh_token");
 
         //tokenS = "BQBMgFm6jnFNWWeZEMGIRP_f-ENPid7Kw8JubAyuWAe4JK0S1DPFGlaAdZ_Fey6ePkCnz8-cqC0oyRmrciWUy5ISUTQKDe8PTQn4iBRMYCgM0n4GnS1xAErHJcm4Vpu2TAngk-4vQUOfTQRcedNTfCaHKP4uFJgTlTI7JHGrtB-_EZLnFcZ2OQe31oFQIJ1wM3ZtvwnN";
         TokenMessage token = new TokenMessage { Token = tokenS, RefreshToken = refreshT };
 
-        CurrentTrackResponse response = await spotifyService.GetCurrentlyPlayingTrack(token);
+        try
+        {
+            CurrentTrackResponse track = await spotifyService.GetCurrentlyPlayingTrack(token);
 
-        //if token expired, refresh it
-        if (response.ResponseMsg == System.Net.HttpStatusCode.Unauthorized)
+            //if token expired, refresh it
+            if (track.ResponseMsg == System.Net.HttpStatusCode.Unauthorized)
+            {
+                string? tempToken = await SpotifyHelper.TryRefreshToken(AuthService, token, localStorage);
+                tokenS = tempToken == null ? tokenS : tempToken;
+                //if refreshed token is null, that means that refresh token was invalid, so you should redirect to login
+            }
+        }
+        catch (RpcException e)
         {
-            string? tempToken = await SpotifyHelper.TryRefreshToken(AuthService, token, localStorage);
-            tokenS =  tempToken == null ? tokenS : tempToken;
-            //if refreshed token is null, that means that refresh token was invalid, so you should redirect to login
+            if (e.StatusCode == StatusCode.Cancelled)
+            {
+                return;
+            }
+            throw;
         }
+
+
         //napravi komponentu koja ce da prikazuje sta trenutno slusas i passuj joj parametre
-    
+
         //var trackById = await trackService.GetById(new GrpcShared.DTO.TrackByID.TrackRequest { TrackID = "4fy1A2WBTPX55mUI16TQXa", Token = tokenS });
+        try
+        {
+            var items = await spotifyService.GetTopItems(new GrpcShared.DTO.TopItem.TopItemRequest { Token = tokenS, IsTracks = false, Offset = 5 });
 
-        var items = await spotifyService.GetTopItems(new GrpcShared.DTO.TopItem.TopItemRequest { Token = tokenS, IsTracks = false, Offset = 5 });
-       
-        if (items.ResponseMsg == System.Net.HttpStatusCode.Unauthorized)
+            if (items.ResponseMsg == System.Net.HttpStatusCode.Unauthorized)
+            {
+                string? tempToken = await SpotifyHelper.TryRefreshToken(AuthService, token, localStorage);
+                tokenS = tempToken == null ? tokenS : tempToken;
+            }
+        }
+        catch (RpcException e)
         {
-             string? tempToken = await SpotifyHelper.TryRefreshToken(AuthService, token, localStorage);
-             tokenS =  tempToken == null ? tokenS : tempToken;
+            if (e.StatusCode == StatusCode.Cancelled)
+            {
+                return;
+            }
+            throw;
         }
 
+
     }
 }

NemAnCore/Shared/NavMenu.razor

 <div class="@NavMenuCssClass" @onclick="ToggleNavMenu" >
     <nav class="flex-column" >
         <div class="nav-item px-3">
-            <NavLink class="nav-link" href="" Match="NavLinkMatch.All">
+            <NavLink class="nav-link" href="home" Match="NavLinkMatch.All">
                 <span class="oi oi-home" aria-hidden="true"></span> Home
             </NavLink>
         </div>