我一直试图从我的本地主机（XAMPP）使用PHPMailer发送邮件，但页面一直在加载。一段时间后，
致命错误：Copyright © 2018 www.jsjsj.com All Rights Reserved.粤ICP备15047777号-1

use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

//Load Composer's autoloader
require 'vendor/autoload.php';

//Create an instance; passing `true` enables exceptions
$mail = new PHPMailer(true);

try {
    //Server settings
    // $mail->SMTPDebug = SMTP::DEBUG_SERVER;                      //Enable verbose debug output
    $mail->SMTPDebug = 2;                      //Enable verbose debug output
    $mail->isSMTP();                                            //Send using SMTP
    $mail->Host       = 'smtp.gmail.com';                     //Set the SMTP server to send through
    $mail->SMTPAuth   = true;                                   //Enable SMTP authentication
    $mail->Username   = 'my_email';                     //SMTP username
    $mail->Password   = 'my_password';                               //SMTP password
    // $mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;            //Enable implicit TLS encryption
    $mail->SMTPSecure = 'tls';            //Enable implicit TLS encryption
    $mail->Port       = 587;                                    //TCP port to connect to; use 587 if you have set `SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS`
    // $mail->Port       = 465;                                    //TCP port to connect to; use 587 if you have set `SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS`

    //Recipients
    $mail->setFrom('my_email', 'Elexis');
    $mail->addAddress('recipient email.com');     //Add a recipient
    // $mail->addAddress('[email protected]');               //Name is optional
    // $mail->addReplyTo('[email protected]', 'Information');
    // $mail->addCC('[email protected]');
    // $mail->addBCC('[email protected]');

    //Attachments
    // $mail->addAttachment('/var/tmp/file.tar.gz');         //Add attachments
    // $mail->addAttachment('/tmp/image.jpg', 'new.jpg');    //Optional name

    //Content
    $body= '<strong>This is my first email with php mailer</strong>';
    $mail->isHTML(true);                                  //Set email format to HTML
    $mail->Subject = 'This Is My First Email';
    $mail->Body    = $body;
    $mail->AltBody = strip_tags($body);

    $mail->send();
    echo 'Message has been sent';
} catch (Exception $e) {
    echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}

怎么解决呢？