Error in the NodeJs config module

I have a mysql.js file that accesses the database as follows:

'use strict';
var mysql = require('mysql'),
    config = require('config');  
var connection = mysql.createConnection({
    host: config.get('mysql.server'),
    user: config.get('mysql.username'),
    password: config.get('mysql.password'),
    database: config.get('mysql.database'),
    port: config.get('mysql.port')
});
connection.connect(function (err) {
    if (err) {
        console.error('Error connecting: ' + err.stack);
        return;
    }
    console.log('Connection established');
});
module.exports = connection;

I'm using the config module (config.get (mysql.server), for example) to fetch the database access data according to the template below (default.json) located at the root of the application within a folder called config:

{
  "mysql": {
    "database": "BANCODEDADOS",
    "password": "SENHA",
    "port": "PORTA",
    "server": "SERVIDOR",
    "username": "USUARIO"
  }
}

I'm using Visual Studio to work on this project.

What's happening ...

When I press F5 inside the vscode, it usually works by accessing the database and the other resources. No problem!

When I start a restart within vscode (Ctrl + Shit + F5), it gives an error in the connection saying that it was not possible to find the information in the default.json file (where I have the access credentials as above). (config.get (mysql.server) is undefined, for example) and there, the config module returns me an undefined error:

node --debug-brk=21502 --nolazy www 
Debugger listening on [::]:21502
WARNING: No configurations found in configuration directory:c:\Users\claudio.campos\Documents\Arquivos\Outros\Estudos\Projetos\Site\Aplicacao\bin\config
WARNING: To disable this warning set SUPPRESS_NO_CONFIG_WARNING in the environment.
c:\Users\claudio.campos\Documents\Arquivos\Outros\Estudos\Projetos\Site\Aplicacao\node_modules\config\lib\config.js:181
    throw new Error('Configuration property "' + property + '" is not defined');
    ^

Error: Configuration property "mysql.server" is not defined
    at Config.get (c:\Users\claudio.campos\Documents\Arquivos\Outros\Estudos\Projetos\Site\Aplicacao\node_modules\config\lib\config.js:181:11)
    at Object.<anonymous> (c:\Users\claudio.campos\Documents\Arquivos\Outros\Estudos\Projetos\Site\Aplicacao\db\mysql.js:7:18)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (c:\Users\claudio.campos\Documents\Arquivos\Outros\Estudos\Projetos\Site\Aplicacao\routes\categoria.js:5:13)

Can anyone tell me why this only happens when I give a restart in vscode?