Installed 1.5.5 and got a PHP error

Hi, I just installed 1.5.5. Just wanted to let you know that I have a php error. I have PHP version:

PHP 7.2.0 (cli) (built: Dec 5 2017 18:56:10) ( NTS )
Copyright © 1997-2017 The PHP Group
Zend Engine v3.2.0, Copyright © 1998-2017 Zend Technologies

This is the error I had:

A PHP Error was encountered

Severity: 8192

Message: The each() function is deprecated. This message will be suppressed on further calls

Filename: MX/Modules.php

Line Number: 81


File: /srv/http/www/local/invoiceplane/invoiceplane-1.5.5/application/third_party/MX/Modules.php
Line: 81
Function: each

File: /srv/http/www/local/invoiceplane/invoiceplane-1.5.5/application/third_party/MX/Loader.php
Line: 269
Function: load

File: /srv/http/www/local/invoiceplane/invoiceplane-1.5.5/application/core/Base_Controller.php
Line: 72
Function: module

File: /srv/http/www/local/invoiceplane/invoiceplane-1.5.5/application/core/User_Controller.php
Line: 25
Function: __construct

File: /srv/http/www/local/invoiceplane/invoiceplane-1.5.5/application/core/Admin_Controller.php
Line: 20
Function: __construct

File: /srv/http/www/local/invoiceplane/invoiceplane-1.5.5/index.php
Line: 327
Function: require_once

Php 7.2 is not yet supported. Please use 7.0 or 7.1.