flask_app: api update_data 增加异常返回

Signed-off-by: binren <zhangbr@elab-plus.com>

flask_app.py

@@ -99,8 +99,12 @@ def tag_tree():
 @app.route('/update_data', methods=['GET', 'POST'])
 def update_data():
     mvp = Mvp()
-    mvp.update_data()
-    mvp.close()
+    try:
+        mvp.update_data()
+        mvp.close()
+    except Exception as e:
+        mvp.close()
+        return str(e)
     return '!!!score update finished!!!'