Phpmailer error: Could not authenticate - php

Question

I know there's a lot a similar questions, I've read them all, tried everything in the comments. Still doesn't work.
I've created the gmail account for this project and set the less secure aplication usage configurations from the beginning.
If anyone can give me any ideas I've aprecciate it a lot, I've been trying to solve this for months.
This is the output:
" 2018-06-03 21:03:33 SERVER -> CLIENT:
2018-06-03 21:03:33 SMTP NOTICE: EOF caught while checking if connected
SMTP Error: Could not authenticate.
SMTP Error: Could not authenticate.
Message hasnt been sent. Mailer Error: SMTP Error: Could not authenticate.> "
And this is my send.php code:
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
require 'PHPMailer/src/PHPMailer.php';
require 'PHPMailer/src/SMTP.php';
require 'PHPMailer/src/Exception.php';
require 'vendor/autoload.php';
if(isset($_REQUEST['send']))
{
$name= $_REQUEST['name'];
$tel= $_REQUEST['tel'];
$email= $_REQUEST['email'];
$preference= $_REQUEST['preference'];
$area= $_REQUEST['area'];
$message= $_REQUEST['message'];
$mail = new PHPMailer(true);
try {
$mail->SMTPDebug = 3;
$mail->isSMTP();
$mail->Host = 'smtp.gmail.com';
$mail->SMTPAuth = true;
$mail->Username = 'mygmailaccount#gmail.com';
$mail->Password = 'thepassword';
$mail->SMTPSecure = 'TSL';
$mail->Port = 587;
$mail->CharSet= 'UTF-8';
// Port 465 for SSL auth. Also tried 587 for authenticated TLS
$mail->setFrom($email, $name);
$mail->addAddress('mygmail#gmail.com', 'Myname');
$mail->isHTML(true);
$mail->Subject = "Contact from ".$name;
$mail->Body = "Name:". $name. ". </br> Tel:". $tel. ". </br> Email:". $email. ". </br> Preference:". $preference. ". </br> Area:". $area. ". </br> Message:". $message. ". </br> ";
$mail->AltBody = "Name:". $name. ". ::: Tel:". $tel. ". ::: Email:". $email. ". ::: Preference:". $preference. ". ::: Area:". $area. ". ::: Message:". $message. ". ::: ";
$mail->send();
$_SESSION["success"] = "Thanks for the message";
}
catch (Exception $e)
{
echo 'Message hasnt been sent. Mailer Error: ', $mail->ErrorInfo;
}
}
Edit: I've tried what Abdulla and Glass said, deactivated the 2 step verification and changed to tsl with port 587 and debug 3 and get this output:
2018-06-03 22:03:55 Connection: opening to smtp.gmail.com:587, timeout=300, options=array()
2018-06-03 22:03:55 Connection: opened
2018-06-03 22:03:55 SERVER -> CLIENT: 220 smtp.gmail.com ESMTP u74-v6sm3867212qku.55 - gsmtp
2018-06-03 22:03:55 CLIENT -> SERVER: EHLO localhost
2018-06-03 22:03:55 SERVER -> CLIENT: 250-smtp.gmail.com at your service, [190.2.100.71]250-SIZE 35882577250-8BITMIME250-STARTTLS250-ENHANCEDSTATUSCODES250-PIPELINING250 SMTPUTF8
2018-06-03 22:03:55 CLIENT -> SERVER: STARTTLS
2018-06-03 22:03:56 SERVER -> CLIENT: 220 2.0.0 Ready to start TLS
2018-06-03 22:03:56 Connection failed. Error #2: stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages:error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed [H:\xampp\htdocs\mati\PHPMailer\src\SMTP.php line 406]
SMTP Error: Could not connect to SMTP host.
2018-06-03 22:03:56 CLIENT -> SERVER: QUIT
2018-06-03 22:03:56 SERVER -> CLIENT:
2018-06-03 22:03:56 SMTP ERROR: QUIT command failed:
2018-06-03 22:03:56 Connection: closed
SMTP Error: Could not connect to SMTP host.
El mensaje no ha sido enviado. Mailer Error: SMTP Error: Could not connect to SMTP host.
Edit2: It is solved, I've uploaded in a provisional server that use tsl authentication and worked perfectly. I can thank you enough #abdulla-nilam and #mr-glass for your contribution.
It finnaly sent the message so, thank you again. It didn't worked at first from my localhost but in the provissional server works just fine.

Answer 1

I think you should try this:
$mail = new \PHPMailer(true);
$mail->CharSet = 'UTF-8'; $mail->isHTML();
$mail->Host = ...//my config
$mail->Port = ...//my port $mail->isSMTP();
if (version_compare(PHP_VERSION, '5.6.0') >= 0){
$mail->SMTPOptions = array( 'ssl' => array( 'verify_peer' => false, 'verify_peer_name' => false, 'allow_self_signed' => true, ), );
}