Use TryAddWithoutValidation

framework/src/Volo.Abp.AspNetCore.Components.Server/Volo/Abp/AspNetCore/Components/Server/Extensibility/BlazorServerLookupApiRequestService.cs

@@ -64,14 +64,7 @@ public class BlazorServerLookupApiRequestService : ILookupApiRequestService, ITr
                 client.BaseAddress = new Uri(baseUrl);
                 foreach (var header in HttpContextAccessor.HttpContext.Request.Headers)
                 {
-                    try
-                    {
-                        requestMessage.Headers.Add(header.Key, header.Value.ToArray());
-                    }
-                    catch (Exception _) //ServerPrerendered
-                    {
-                        // ignored
-                    }
+                    requestMessage.Headers.TryAddWithoutValidation(header.Key, header.Value.ToArray());
                 }
             }
         }