FIREBASE WARNING: Exception was thrown by user callback.

router.post('/create', function(req, res, next) {
  var fireRef = firebaseAdmin.ref('todo').push();
  var fireGetRef = firebaseAdmin.ref('todo');
  var data = {
    content: req.body.content
  }
  fireRef.set(data).then(function(){
    fireGetRef.once('value', function (snapshot) {
      res.send({
        success: true,
        result: snapshot.val(),
        massage: '新增資料成功'
      });
    })
  })
  res.end();
});

router.post('/create', function(req, res, next) {
  var fireRef = firebaseAdmin.ref('todo').push(); // 設定路徑，並使用 push() 確保唯一值
  var fireGetRef = firebaseAdmin.ref('todo');
  var data = {
    content: req.body.content
  }
  fireRef.set(data).then(function(){
    fireGetRef.once('value', function (snapshot) {
      res.send({
        success: true,
        result: snapshot.val(),
        massage: '新增資料成功'
      });
    })
  })
});