NetworkError：发送电子邮件时PHP中的500内部服务器错误

Question

<?php
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Credentials: true');
header('Access-Control-Allow-Headers: Content-Type');
//Include Files
include 'config.php';
include 'jsonFormat.php';
include 'jsonDeliver.php';
$josn = file_get_contents("php://input");
$data = json_decode($josn, true);
$jsonresponse = array();
$Email=$data['signUp'][0]['email'];
echo $Email;

            $to=$Email;
            $subject='Email verification';
            $address = $to;
            $from='noreply@example.com';
            $body='hi';
            function Send_Mail($to,$subject,$body,$from)
                {
                require_once('./smtp/class.phpmailer.php');
                //$from       = "from@gmail.com";
                $mail       = new PHPMailer();
                $mail->IsSMTP();            // use SMTP 
                $mail->IsHTML(true);
                $mail->SMTPSecure = 'ssl';
                $mail->SMTPAuth   = true;             // enable SMTP authentication
                $mail->Host       = 'smtp.zoho.com'; // Amazon SES server, note "tls://" protocol
                $mail->Port       =  465;           // set the SMTP port
                $mail->Username   = 'noreply@example.com';  // SMTP  username
                $mail->Password   = 'noreply@123';  // SMTP password
                $mail->SetFrom('noreply@example.com');
                $mail->AddReplyTo('noreply@example.com');
                $mail->Subject    = $subject;
                $mail->MsgHTML($body);
                $address = $to;
                $mail->AddAddress($address,$to);
                        if(!$mail->Send())
                        {
                            //"Mailer Error". $mail->ErrorInfo;
                            echo "Mailer Error". $mail->ErrorInfo;
                        }   
                        else
                        {   $msg="your account activation link has sent to your mail please activate your account by clicking on givrn link";
                            echo $msg;
                            }                           
                }
                Send_Mail($to,$subject,$body,$from);     
?>

我试图将邮件从php发送到特定的输入邮件ID，但因为显示网络错误而卡住了。我尝试了很多方法来解决这个问题但却找不到。请帮我解决这个问题。这是服务器问题吗？