how to solve php Mailer Error SMTP connect() failed - php

Question

I am using php mailer to send mail. It is working on localhost. But not working on live cpanel hosting.
Mail is sending proper in my localhost. In live server I found error.
Mailer Error: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
public function send_mail($to,$bodytext,$subject)
{
try{
// start mailer
$toAddress = $to;
$message = $bodytext;
$mail = new PHPMailer();
$mail->IsSMTP();
$mail->SMTPAuth = true;
$mail->Host = "smtp.gmail.com";
$mail->Port = 587;
$mail->SMTPOptions = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true
)
);
$mail->IsHTML(true);
$mail->Username = "xxxxxx#gmail.com"; // your gmail address
$mail->Password = "xxxxx#123"; // password
$mail->SetFrom("xxxxxx#gmail.com");
$mail->Subject = $subject; // Mail subject
$mail->Body = $message;
$mail->AddAddress($toAddress);
if (!$mail->Send()) {
echo "Mailer Error: " . $mail->ErrorInfo;
exit;
return False;
} else {
return true;
}
// end mailer
}
catch (Exception $e)
{
return $e->getMessage();
}
}