Problem join database mysql in virtual machine with express node - mysql

Question

I have a virtual machine on which is install ubuntu server with mysql and phpmyadmin I try to connect through express node js.
If I type 192.168.11.120/phpmyadmin (virtual machine address in the network) on the physical machine's browser, I can access it.
After doing a npm install mysql, it's my code
var mysql = require('mysql');
var connection = mysql.createConnection({
host : '192.168.11.120',
user : 'test',
password : 'test'
});
connection.connect();
connection.query('SELECT 1 + 1 AS solution', function(err, rows, fields)
{
if (err) {console.log(err)} ;
});
connection.end();
The console shows me the following error after doing a "node index.js".
{ Error: connect ECONNREFUSED 192.168.11.120:3306
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1106:14)
--------------------
at Protocol._enqueue (C:\Users\Boubacar\Desktop\ISTA\server\node_modules\mysql\lib\protocol\Protocol.js:144:48)
at Protocol.handshake (C:\Users\Boubacar\Desktop\ISTA\server\node_modules\mysql\lib\protocol\Protocol.js:51:23)
at Connection.connect (C:\Users\Boubacar\Desktop\ISTA\server\node_modules\mysql\lib\Connection.js:119:18)
at Object.<anonymous> (C:\Users\Boubacar\Desktop\ISTA\server\index.js:8:12)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
errno: 'ECONNREFUSED',
code: 'ECONNREFUSED',
syscall: 'connect',
address: '192.168.11.120',
port: 3306,
fatal: true }
I can not find out if it's a problem related to virtualbox or it's the code that is not good