Update Joomla 3.8.8 gives white screen on the site

[DrHouse44]

After the update to joomla 3.8.8 I get a white screen.
The error report once put on development.
Then I get the following error: Fatal error: Using $this when not in object context in C:\xampp\htdocs\Joomla\Joomla\mod_random_image\tmpl\default.php online 16
Luckily I had another backup and went to see what has changed in that file.

Before the update there was this:
`<?php
/**

• @Package Joomla.Site
• @subpackage mod_random_image
• @copyright Copyright (C) 2005 - 2018 Open Source Matters, Inc. All rights reserved.
• @license GNU General Public License version 2 or later; see LICENSE.txt
  */

defined('_JEXEC') or die;
?>

folder . '/' . $image->name, $image->name, array('width' => $image->width, 'height' => $image->height)); ?>

`

After the update, this will be displayed:
`<?php
/**

• @Package Joomla.Site
• @subpackage mod_random_image
• @copyright Copyright (C) 2005 - 2018 Open Source Matters, Inc. All rights reserved.
• @license GNU General Public License version 2 or later; see LICENSE.txt
  */

defined('_JEXEC') or die;
?>

folder . '/' . $this->escape($image->name), $this->escape($image->name), array('width' => $image->width, 'height' => $image->height)); ?>

`

And if I restore the file "default.php" before the update, the site will just work properly again.
The upgrade package once separately downloaded and in that file that file is also adjusted.

Is this an error in the Joomla update?

So I tried out Xampp locally first, I'm still waiting to update on the server.

[PhilETaylor]

https://docs.joomla.org/J3.x:Module_random_image_PHP_Error_after_3.8.8

[brianteeman]

This is a duplicate report and has been fixed with #20533

[DrHouse44]

okay sorry for the double post