fix: 搜索结果为null时页面异常

lib/pages/searchPanel/view.dart

@@ -74,6 +74,7 @@ class _SearchPanelState extends State<SearchPanel>
         future: _futureBuilderFuture,
         builder: (context, snapshot) {
           if (snapshot.connectionState == ConnectionState.done) {
+            if (snapshot.data != null) {
               Map data = snapshot.data;
               var ctr = _searchPanelController;
               RxList list = ctr.resultList;
@@ -109,6 +110,17 @@ class _SearchPanelState extends State<SearchPanel>
                   ],
                 );
               }
+            } else {
+              return CustomScrollView(
+                physics: const NeverScrollableScrollPhysics(),
+                slivers: [
+                  HttpError(
+                    errMsg: '没有相关数据',
+                    fn: () => setState(() {}),
+                  ),
+                ],
+              );
+            }
           } else {
             // 骨架屏
             return ListView.builder(