diff --git a/src/controllers/log-controller.ts b/src/controllers/log-controller.ts
index c99b4fe..7e1d7a7 100644
--- a/src/controllers/log-controller.ts
+++ b/src/controllers/log-controller.ts
@@ -31,8 +31,13 @@ export class LogController extends Controller {
   ) {
     if (!endDate && !startDate) startDate = endDate = date;
 
-    const startDateString = `${startDate.getFullYear()}-${(startDate.getMonth() + 1).toString().padStart(2, "0")}-${startDate.getDate().toString().padStart(2, "0")}T00:00:00`;
-    const endDateString = `${endDate.getFullYear()}-${(endDate.getMonth() + 1).toString().padStart(2, "0")}-${endDate.getDate().toString().padStart(2, "0")}T23:59:59`;
+    let startDateString: string | undefined;
+    let endDateString: string | undefined;
+
+    if (startDate && endDate) {
+      startDateString = `${startDate.getFullYear()}-${(startDate.getMonth() + 1).toString().padStart(2, "0")}-${startDate.getDate().toString().padStart(2, "0")}T00:00:00`;
+      endDateString = `${endDate.getFullYear()}-${(endDate.getMonth() + 1).toString().padStart(2, "0")}-${endDate.getDate().toString().padStart(2, "0")}T23:59:59`;
+    }
 
     const queryData = await elasticsearch.search({
       index: ELASTICSEARCH_INDEX,
@@ -48,7 +53,7 @@ export class LogController extends Controller {
                         {
                           multi_match: {
                             query: search,
-                            fields: ["method", "logType", "endpoint", "host"],
+                            fields: ["method", "logType", "endpoint", "host", "responseCode"],
                           },
                         },
                       ],
@@ -56,7 +61,7 @@ export class LogController extends Controller {
                   },
                 ]
               : []),
-            ...(date
+            ...(startDateString || endDateString
               ? [
                   {
                     range: {