fix exception error when header settings mismatch

sample/EasyAuthForK8s.Sample/Pages/Index.cshtml.cs

@@ -13,6 +13,8 @@ namespace EasyAuthForK8s.Sample.Pages
             _logger = logger;
         }
         public void OnGet(string? encoding, string? format, string? prefix)
+        {
+            try
             {
                 if (!string.IsNullOrEmpty(encoding))
                     Encoding = encoding!;
@@ -39,6 +41,11 @@ namespace EasyAuthForK8s.Sample.Pages
 
                 Headers.AddRange(headers.ToList());
             }
+            catch (Exception ex)
+            {
+                // Do nothing, just don't throw an exception.
+            }
+        }
         public List<KeyValuePair<string, string>> Headers = new();
         public string Encoding = "UrlEncode";
         public string Format = "Separate";