diff --git a/src/dotnet/QuantEngine.Application/Services/KisApiPriceSource.cs b/src/dotnet/QuantEngine.Application/Services/KisApiPriceSource.cs
index eca4d36e..350a2fd5 100644
--- a/src/dotnet/QuantEngine.Application/Services/KisApiPriceSource.cs
+++ b/src/dotnet/QuantEngine.Application/Services/KisApiPriceSource.cs
@@ -51,7 +51,7 @@ public class KisApiPriceSource : IPriceSource
                 result.OrderbookStatus = "OK";
                 result.OrderbookRaw = output1;
             }
-            catch (Exception ex)
+            catch (Exception)
             {
                 result.OrderbookStatus = "ERROR";
             }
@@ -70,7 +70,7 @@ public class KisApiPriceSource : IPriceSource
                 result.ShortSaleStatus = "OK";
                 result.ShortSaleRaw = (Dictionary<string, object>?)rows.FirstOrDefault() ?? new();
             }
-            catch (Exception ex)
+            catch (Exception)
             {
                 result.ShortSaleStatus = "ERROR";
             }
diff --git a/src/dotnet/QuantEngine.Web/Pages/Admin/Monitoring/Index.cshtml b/src/dotnet/QuantEngine.Web/Pages/Admin/Monitoring/Index.cshtml
index 94841983..66442a0c 100644
--- a/src/dotnet/QuantEngine.Web/Pages/Admin/Monitoring/Index.cshtml
+++ b/src/dotnet/QuantEngine.Web/Pages/Admin/Monitoring/Index.cshtml
@@ -45,7 +45,7 @@
                                         <td>
                                             @if (run.TotalSnapshots > 0)
                                             {
-                                                var progressPercent = (int)((run.TotalSnapshots * 100) / (run.TotalSnapshots + run.TotalErrors + 1));
+                                                var progressPercent = (int)((run.TotalSnapshots * 100) / (run.TotalSnapshots + (run.TotalErrors ?? 0) + 1));
                                                 <div class="progress progress-sm">
                                                     <div class="progress-bar bg-info" style="width: @progressPercent%"></div>
                                                 </div>