Hello,

After updating to Piwigo 2.8.5 I'm getting an error anytime I try to use phpmailer function. Triggers tested are Forgot Password, Register and user notification.

**********BEGIN ERROR***************
( ! ) Fatal error: Class 'SMTP' not found in /var/www/html/include/phpmailer/class.phpmailer.php on line 1520
Call Stack
#    Time    Memory    Function    Location
1    0.0000    238392    {main}( )    .../register.php:0
2    0.0033    784968    register_user( )    .../register.php:70
3    0.2246    802208    pwg_mail_notification_admins( )    .../functions_user.inc.php:245
4    0.2248    844576    pwg_mail_admins( )    .../functions_mail.inc.php:415
5    0.2251    848344    pwg_mail( )    .../functions_mail.inc.php:460
6    0.2780    2635568    PHPMailer->send( )    .../functions_mail.inc.php:900
7    0.2788    2645664    PHPMailer->postSend( )    .../class.phpmailer.php:1213
8    0.2788    2646088    PHPMailer->smtpSend( )    .../class.phpmailer.php:1335
9    0.2788    2646856    PHPMailer->smtpConnect( )    .../class.phpmailer.php:1540
10    0.2788    2646904    PHPMailer->getSMTPInstance( )    .../class.phpmailer.php:1603
**********END ERROR***************

contents of include\phpmailer are:
-class.phpmailer.php
-class.smtp.php
-PHPMailerAutoload.php

Piwigo version: 2.8.5
PHP version: PHP Version 5.6.29-1+deb.sury.org~xenial+1
MySQL version: mysql  Ver 15.1 Distrib 10.1.20-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2
Piwigo URL: https://pics.bosaz.com
Hosting Service: AWS EC2 Ubuntu Server (Ubuntu 16.04.1 LTS)

Any help is much appreciated.  Thank you in advanced!