Пустой экран контактной формы SMTP для отправки

У меня было много проблем с контактной формой, кто-нибудь знает, почему мой код просто поднимает пустой экран с «(URL) /mail.php, когда я нажимаю« Отправить »в моей форме.

Вот мой код

<h2 class="formhead">Contact Form</h2> <br> <form class="form" action="mail.php" method="post"> <p class="name"> <input type="text" name="name" id="name" placeholder="John Doe" /> <label for="name">Name</label> </p> <br> <p class="email"> <input type="text" name="email" id="email" placeholder="mail@example.com" /> <label for="email">Email</label> </p> <br> <p class="number"> <input type="text" name="number" id="number" placeholder="0774XXXXXXX" /> <label for="name">Contact Number</label> </p> <br> <p class="web"> <input type="text" name="web" id="web" placeholder="www.example.co.uk" /> <label for="name">Website</label> </p> <br> <p class="query"> <textarea name="query" id="query" placeholder="Write something to us" /> </textarea> </p> <br> <p class="submit"> <input name="btnSubmit" type="submit" onclick="javascript: return validate();" value="Send" /> </p> </form> 

PHP

 <? ob_start(); if(isset($_POST['btnSubmit'])) { require("class.phpmailer.php"); $mail = new PHPMailer(); //Your SMTP servers details $mail->IsSMTP(); // set mailer to use SMTP $mail->Host = "localhost"; // specify main and backup server or localhost $mail->SMTPAuth = true; // turn on SMTP authentication $mail->Username = "supp0rt@c(hidden)y.co.uk"; // SMTP username $mail->Password = "DQ(hidden)"; // SMTP password //It should be same as that of the SMTP user $redirect_url = "http://".$_SERVER['SERVER_NAME']; //Redirect URL after submit the form $mail->From = $mail->Username; //Default From email same as smtp user $mail->FromName = "Display Name"; $mail->AddAddress("enquiries@c(hidden)y.co.uk", "chapnolo"); //Email address where you wish to receive/collect those emails. $mail->WordWrap = 50; // set word wrap to 50 characters $mail->IsHTML(true); // set email format to HTML $mail->Subject = $_POST['email']; $message = "Name of the requestor :".$_POST['name']." \r\n <br>Email Adrress :".$_POST['email']." \r\n <br> Phone number :".$_POST['number']."\r\n <br> Message: ".$_POST['query']."\r\n <br> Website: ".$_POST['web']; $mail->Body = $message; if(!$mail->Send()) { echo "Message could not be sent. <p>"; echo "Mailer Error: " . $mail->ErrorInfo; exit; } echo "Message has been sent"; header("Location: $redirect_url"); } ?> 

Любые идеи были бы очень признательны, я новичок в PHP.