stupid me

src/utils/notify.js

@@ -18,7 +18,7 @@ const notify = (token, groupId, action, item, data) => {
         if (client.currentGroup == groupId) {
             let userIdFromToken = jwt.decode(client.token, config.secret).login.id
             if (userIdCurrent == userIdFromToken) return;
-            client.socket.send(payload)
+            client.socket.send(JSON.stringify(payload))
         }
     });
 }