fix: WebPush Notification

server/server.js

@@ -26,6 +26,7 @@ require('./models/todo');
 require('./models/user');
 require('./models/subscribers');
 
+
 const index_router = require('./router/index_router');
 const push_router = require('./router/push_router');
 const subscribe_router = require('./router/subscribe_router');