Javascript Express Postgres未处理承诺拒绝警告

我正在用express和postgres学习Node JS，当我制作CRUD应用程序时，我在执行INSERT INTO语句时遇到了这样的错误

(node:4998) UnhandledPromiseRejectionWarning: TypeError: Invalid Query Result Mask specified.
at Database.$query (/home/aabishkar/Documents/meanstack/node_modules/pg-promise/lib/query.js:121:25)
at Database.<anonymous> (/home/aabishkar/Documents/meanstack/node_modules/pg-promise/lib/query.js:259:23)
at config.$npm.connect.pool.then.db (/home/aabishkar/Documents/meanstack/node_modules/pg-promise/lib/database.js:326:42)
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:188:7) (node:4998) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 3) (node:4998) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

数据库已连接。以下代码也可以很好地用于参考。当我尝试动态插入值时会出现错误

//this codes works finely
exports.addlist = function(req, res) {
  qry = "INSERT INTO students (name, gender, dob) VALUES ('sdasda', 'male', '12-12-1999')";
  db.query(qry, function (err, result) {
    if (err) throw err;
    console.log("Number of records inserted: " + result.affectedRows);
  });
  res.redirect('/');
}

谢谢。

返回一个

承诺

，它不需要回调。您正在错误地使用库。如果值是第二个参数，那么第三个参数不应该是回调，而应该是

您应该在以下情况下使用它：

db.query(...)
 .then(r => console.log(r))
 .catch(e => console.log(e))

---

查看此

是否确定

？

占位符对

pg promise

有效？看见

db.query(...)
 .then(r => console.log(r))
 .catch(e => console.log(e))