How To Fix Cannot Enqueue Handshake After Already Enqueuing A Handshake

Hello guys, back with me. In the nigh i will share about how to fix error in nodejs + mysql. This is a error message "Cannot enqueue Handshake after already enqueuing a Handshake".

Why i get this error ? it is a bug in mysql module, you dont need to connect if you already create createConnection. so you must delete your connection and delete end connection.

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below is the example code.

Before

 var con = require('../databases/db');  /* GET users listing. */ router.get('/', function(req, res, next) {  con.connect(function(err) {    if (err) throw err;    con.query("SELECT * FROM Kriteria", function (err, result, fields) {      if (err) throw err;      res.render('kriteria/index',{       kriterias:result      });    });  }); }); 

After delet connection

 var con = require('../databases/db');  /* GET users listing. */ router.get('/', function(req, res, next) {    con.query("SELECT * FROM Kriteria", function (err, result, fields) {      if (err) throw err;      res.render('kriteria/index',{       kriterias:result      });    }); }); 

Now, you solve your problem.
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