TypeError [ERR_INVALID_ARG_TYPE]: The first argument must be of type string or an instance of Buffer, ArrayBuffer, or Array or an Array-like Object. Received undefined

[ZengXiangJun]

`
var config = {
host: 'xxx',
port: 3306,
user: 'root',
password: 'xxx',
database: 'xxxx',
waitForConnections: true,
connectionLimit: 10,
queueLimit: 0
};
var mysql = require('mysql2');
var pool = mysql.createPool(config);
var promisePool = pool.promise();

var sql = insert into memo_check_file(openid, relation_id, type, size, url, status, time) values(?, ?, ?, ?, ?, 1, now());
var params = [openid, relation_id, type, size, url];
var [rows, fields] = await promisePool.query(sql, params);
`
Calling like this will occasionally report an error like this，How to solve it?