PHP - mail（）函数在我的localhost（127.0.0.1）上不起作用

Question

我正在使用php处理我的localhost，我首先使用此代码发送邮件;

<?php
echo "<h1>Sending Email</h1>";

$emailTo = "saroj@gmail.com";
$subject = "I hope this works";
$body = "Test message";
$headers = "From: sarojkumar.sahoo1998@gmail.com";
//$text = str_replace("\n.", "\n..", $text);
 if (mail($emailTo, $subject, $body, $headers)) {
    echo "Email is sent successfully.";
 }else {
    echo "email not sent!";
 }

?>

我的错误显示在我的localhost中，如： see error page image

怎么办？