기타 수정사항

frontend/components/admin/dashboard/ElementConfigModal.tsx

@@ -7,7 +7,6 @@ import { ChartConfigPanel } from "./ChartConfigPanel";
 import { DataSourceSelector } from "./data-sources/DataSourceSelector";
 import { DatabaseConfig } from "./data-sources/DatabaseConfig";
 import { ApiConfig } from "./data-sources/ApiConfig";
-import { validateDataSource } from "./data-sources/dataSourceUtils";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
 import { Progress } from "@/components/ui/progress";
@@ -58,6 +57,10 @@ export function ElementConfigModal({ element, isOpen, onClose, onSave }: Element
         refreshInterval: 0,
       });
     }
+
+    // 데이터 소스 변경 시 쿼리 결과와 차트 설정 초기화
+    setQueryResult(null);
+    setChartConfig({});
   }, []);
 
   // 데이터 소스 업데이트
@@ -196,8 +199,6 @@ export function ElementConfigModal({ element, isOpen, onClose, onSave }: Element
                 ) : (
                   <div className="flex h-full items-center justify-center rounded-lg border-2 border-dashed border-gray-300 bg-gray-50 p-8 text-center">
                     <div>
-                      <div className="mb-2 text-4xl">📊</div>
-                      <div className="text-sm font-medium text-gray-700">쿼리를 실행하세요</div>
                       <div className="mt-1 text-xs text-gray-500">데이터를 가져온 후 차트 설정이 표시됩니다</div>
                     </div>
                   </div>