fix: 修改工作流编辑器为空界面报错bug

src/pages/bsmanager/workOrder/workflowEdit/Workflow.jsx

@@ -45,8 +45,14 @@ const Workflow = () => {
   }, []);
   useEffect(() => {
     if (flag === 2) {
-      console.log(treeData);
+      console.log(treeData, 'treeData');
+      if (treeData.length === 0) {
+        return;
+      }
       setExpandedKey(treeData[0].name + 0);
+      if (!treeData[0].children) {
+        return;
+      }
       setCurrentSelectId(treeData[0].children[0].FlowID);
       setTreeId(treeData[0].children[0].FlowID);
       GetFlowNode({ flowID: treeData[0].children[0].FlowID }).then(res => {