Error: Connection lost: The server closed the connection

whenn i run nodejs I got this error after 1 minutes

this is full error message mesage

30 Mar 10:48:01 - [nodemon] to restart at any time, enter `rs`
30 Mar 10:48:01 - [nodemon] watching: *.*
30 Mar 10:48:01 - [nodemon] starting `node NotificationServer.js`
Express server listening on port 3000

Error: Connection lost: The server closed the connection.
at Protocol.end (F:\atiralCloudNotification\node_modules\mysql\lib\protocol\      Protocol.js:78:13)
at Socket.<anonymous> (F:\atiralCloudNotification\node_modules\mysql\lib\Con
nection.js:79:28)
at Socket.emit (events.js:117:20)
at _stream_readable.js:943:16
at process._tickCallback (node.js:419:13)
at process._tickCallback (node.js:419:13) 30 Mar 10:49:06 - [nodemon] app crashed - waiting for file changes before starting...

my code is

    atiralApp.use(  connection(mysql,

        host: configuration.databaseHostName,
        user: configuration.databaseUser,
        password : configuration.databasePassword,
        port : configuration.databasePort, //port mysql
        database:configuration.databaseDatabaseName
    },'pool')
);