The mysql server disconnects every night, how do I resolve it? - mysql

Question

I leave my computer on 24 hours, but I still lose connection with the MySQL server. My WiFi runs smoothly and is never disconnected because I'm still able to use the internet along with my other electronics. The error message says
The server closed the connection.
Is this inferring a problem on my computer/connection or with MySQL? Or is it my codes? Please advise.
Error messages:
events.js:174
throw er; // Unhandled 'error' event
^
Error: Connection lost: The server closed the connection.
at Protocol.end (C:\Users\Nick\Desktop\MyBot\node_modules\mysql\lib\protocol\Protocol.js:112:13)
at Socket.<anonymous> (C:\Users\Nick\Desktop\MyBot\node_modules\mysql\lib\Connection.js:97:28)
at Socket.<anonymous> (C:\Users\Nick\Desktop\MyBot\node_modules\mysql\lib\Connection.js:525:10)
at Socket.emit (events.js:203:15)
at endReadableNT (_stream_readable.js:1145:12)
at process._tickCallback (internal/process/next_tick.js:63:19)
Emitted 'error' event at:
at Connection._handleProtocolError (C:\Users\Nick\Desktop\MyBot\node_modules\mysql\lib\Connection.js:426:8)
at Protocol.emit (events.js:198:13)
at Protocol._delegateError (C:\Users\Nick\Desktop\MyBot\node_modules\mysql\lib\protocol\Protocol.js:398:10)
at Protocol.end (C:\Users\Nick\Desktop\MyBot\node_modules\mysql\lib\protocol\Protocol.js:116:8)
at Socket.<anonymous> (C:\Users\Nick\Desktop\MyBot\node_modules\mysql\lib\Connection.js:97:28)
[... lines matching original stack trace ...]
at process._tickCallback (internal/process/next_tick.js:63:19)
My codes:
let con = mysql.createConnection({
host: "localhost",
user: "root",
password: "password",
database: 'db',
dateStrings: 'date',
});
const handleDisconnect = () => {
con.connect(err => {
if (err) throw err;
console.log("Connected!");
});
con.on('err', err => {
console.log('db error', err);
if (err.code === 'PROTOCOL_CONNECTION_LOST') {
handleDisconnect();
} else {
throw err;
}
});
}
handleDisconnect();