wp_mail doen’t send mails with attachment

Try code below.

<?php
$attachments = array();

array_push($attachments, WP_CONTENT_DIR . '/uploads/my-first-attachment.docx' );
array_push($attachments, WP_CONTENT_DIR . '/uploads/my-second-attachment.zip' );

$to="[email protected]";
$subject="Online: multiple attachment demo through wp_mail of wordpress";
$message="This is testing";
$headers="From: NAPSWI online <[email protected]>";
get_header();
if( wp_mail( $to, $subject, $message, $headers, $attachments) ) {
 // the message was sent...
 echo 'The test message was sent. Check your email inbox.';
} else {
 // the message was not sent...
 echo 'The message was not sent!';
}
?>