503 ERROR when activated

Hello @reelism,

thanks for your feedback. Can you support us with a list of the plugins and theme you are using?

It seems our script is not working fine with one of your plugins or theme, therefor we want to investigate that issue and look for a solution.

Best regards
Marc

A quick cut and paste

Advanced Database Cleaner
Deactivate | Rollback
Clean database by deleting unused data such as 'old revisions', 'old drafts', 'orphan options', etc. Optimize database and more.

Version 2.0.0 | By Younes JFR. | View details
Select Akismet Anti-Spam	
Akismet Anti-Spam
Settings | Deactivate | Rollback
Used by millions, Akismet is quite possibly the best way in the world to protect your blog from spam. Your site is fully configured and being protected, even while you sleep.

Version 4.1.2 | By Automattic | View details
Select ARVE Advanced Responsive Video Embedder	
ARVE Advanced Responsive Video Embedder
Buy Pro Addon | Donate | Settings | Deactivate | Rollback
Easy responsive video embeds via URL (like WordPress) or Shortcodes. Supports almost anything you can imagine.

Version 8.10.6 | By Nicolas Jonas | View details
Select Autoptimize	
Autoptimize
Settings | Deactivate | Rollback
Makes your site faster by optimising CSS, JS, Images, Google fonts and more.

Version 2.5.1 | By Frank Goossens (futtta) | View details
Select Better Click To Tweet	
Better Click To Tweet
Settings | Deactivate | Rollback
Add Click to Tweet boxes simply and elegantly to your posts or pages. All the features of a premium plugin, for FREE!

Version 5.8.2 | By Ben Meredith | View details
Select Better Search Replace	
Better Search Replace
Deactivate | Rollback
A small plugin for running a search/replace on your WordPress database.

Version 1.3.3 | By Delicious Brains | View details | Upgrade to Pro
Select Central Colour Palette	
Central Colour Palette
Deactivate | Colour Palette | Rollback
Manage a site-wide central colour palette for an uniform look'n'feel! Supports the new block editor, theme customiser and many themes and plugins.

Version 1.13.11 | By Daniel Schneider | View details
Select Classic Editor	
Classic Editor
Deactivate | Settings | Rollback
Enables the WordPress classic editor and the old-style Edit Post screen with TinyMCE, Meta Boxes, etc. Supports the older plugins that extend this screen.

Version 1.5 | By WordPress Contributors | View details
Select Clean Unused Medias	
Clean Unused Medias
Deactivate | Rollback
Clean Unused Medias : Simple way to delete medias not attached to any posts or pages

Version 1.09 | By xuxu.fr | View details
Select Code Snippets	
Code Snippets
Snippets | Deactivate | Rollback
An easy, clean and simple way to run code snippets on your site. No need to edit to your theme's functions.php file again!

Version 2.13.3 | By Shea Bunge | View details | About | Support | Donate
Select Conditional Menus	
Conditional Menus
Deactivate | Rollback | Themify Updater
This plugin enables you to set conditional menus per posts, pages, categories, archive pages, etc.

Version 1.1.3 | By Themify | View details | View Changelogs
Select Custom Icons for Elementor	
Custom Icons for Elementor
Deactivate | Rollback
Add custom icon fonts to the built in Elementor controls

Version 0.3.1 | By Michael Bourne | View details
Select Custom Post Type Cleanup	
Custom Post Type Cleanup
Deactivate | Rollback
Detect and delete posts from custom post types that are no longer in use.

Version 1.3.0 | By keesiemeijer | View details
Select Custom Post Type Editor	
Custom Post Type Editor
Deactivate | Rollback
Customize the text labels, menu names or description for any registered custom post type using a simple Dashboard user interface.

Version 1.4.1 | By OM4 | View details
Select Customizer Search	
Customizer Search
Deactivate | Rollback
Search for settings in customizer.

Version 1.1.2 | By Brainstorm Force | View details
Select Duplicate Menu	
Duplicate Menu
Deactivate | Rollback
Easily duplicate your WordPress Menus

Version 0.2.1 | By Jonathan Christopher | View details
Select Duplicate Post	
Duplicate Post
Settings | Deactivate | Rollback
Clone posts and pages.

Version 3.2.3 | By Enrico Battocchi | View details | Documentation | Donate
Select Elementor	
Elementor
Settings | Deactivate | Rollback
The most advanced frontend drag & drop page builder. Create high-end, pixel perfect websites at record speeds. Any theme, any page, any design.

Version 2.6.8 | By Elementor.com | View details | Docs & FAQs | Video Tutorials
Select Elementor Pro	
Elementor Pro
Deactivate
Elementor Pro brings a whole new design experience to WordPress. Customize your entire theme: header, footer, single post, archive and 404 page, all with one page builder.

Version 2.6.2 | By Elementor.com | Visit plugin site | View details | Changelog
Select Email Address Encoder	
Email Address Encoder
FAQ | Premium | Settings | Deactivate | Rollback
A lightweight plugin that protects email addresses from email-harvesting robots by encoding them into decimal and hexadecimal entities.

Version 1.0.19 | By Till Krüss | View details
Select Fix Media Library	
Fix Media Library
Deactivate | Rollback | Fix Media Library
Fixes Media Library

Version 2.0 | By WowPress.host | View details
Select GP Premium	
GP Premium
Deactivate | Configure
The entire collection of GeneratePress premium modules.

Version 1.8.3 | By Tom Usborne | Visit plugin site
Select GP Related Posts	
GP Related Posts
Deactivate | Rollback
Add related posts to the bottom of your single posts page

Version 1.2 | By West Coast Digital | View details
Select GP Social Share	
GP Social Share
Deactivate | Rollback
Add social share icons to single posts within GeneratePress

Version 1.2 | By West Coast Digital | View details
Select Helpie FAQ	
Helpie FAQ
Upgrade | Opt In | Deactivate | Rollback
Awesome WordPress FAQ plugin

Version 0.7.5 | By HelpieWP | View details
Select Imsanity	
Imsanity
Settings | Deactivate | Rollback
Imsanity stops insanely huge image uploads

Version 2.4.2 | By Exactly WWW | View details
Select Infinite Scroll for GeneratePress	
Infinite Scroll for GeneratePress
Deactivate | Rollback
A very lightweight infinite scroll plugin for your blog running the GeneratePress Theme by Tom Usborne. Just install and activate this plugin to enable infinite scroll on your blog.

Version 1.0.3 | By Mathew Moore | View details
Select Jarvis	
Jarvis
Deactivate | Rollback
Jarvis is your administration assistant, putting WordPress at your fingertips.

Version 1.0.4 | By The Web Development Group, David Everett, Joan Piedra, Kurtis Shaner, Doug Axelrod | View details
Select Lightweight Social Icons	
Lightweight Social Icons
Deactivate | Rollback
Add simple icon font social media buttons. Choose the order, colors, size and more for 42 different icons!

Version 1.0.1 | By Thomas Usborne | View details
Select Limit Login Attempts Reloaded	
Limit Login Attempts Reloaded
Deactivate | Rollback
Limit the rate of login attempts, including by way of cookies and for each IP address.

Version 2.9.0 | By WPChef | View details
Select LiteSpeed Cache	
LiteSpeed Cache
Deactivate | Rollback | Settings
High-performance page caching and site optimisation from LiteSpeed

Version 2.9.8.4 | By LiteSpeed Technologies | View details
Select Media Cleaner	
Media Cleaner
Deactivate | Rollback
Clean your Media Library, many options, trash system.

Version 5.4.1 | By Jordy Meow | View details
Select Media Library Organizer	
Media Library Organizer
Deactivate | Rollback
Organize and Search your Media Library, quicker and easier.

Version 1.0.7 | By WP Media Library | View details
Select Native Emoji	
Native Emoji
Deactivate | Rollback | Settings
This is not just a plugin, this is the plugin for use emoji in a native way in your posts and comments. When activated you will see a new button in your wordpress editor or comments box, from there you will be able to include more than 2,000 emojis.

Version 3.0.1 | By Daniel Brandenburg | View details
Select One Click SSL	
One Click SSL
Deactivate | Settings | Rollback
SSL redirect and automatic https:// resource conversion for your WordPress website.

Version 1.4.7 | By Tribulant Software | View details
Select Plugin Toggle	
Plugin Toggle
Deactivate | Rollback
Quickly toggle plugin activation status from the toolbar.

Version 1.3.1 | By Cedaro | View details
Select Quick Featured Images	
Quick Featured Images
Deactivate | Rollback | Settings
Your time-saving Swiss Army Knife for featured images: Set, replace and delete them in bulk, in posts lists and set default images for future posts.

Version 13.3.4 | By Martin Stehle | View details
Select Regenerate thumbnails and delete unused	
Regenerate thumbnails and delete unused
Deactivate | Rollback | Settings | Support Forum | Live Chat
Regenerate thumbnails and delete unused

Version 1.0.6 | By wpregenerate | View details
Select Shortcodes Ultimate	
Shortcodes Ultimate
Shortcodes | Settings | Deactivate | Rollback
A comprehensive collection of visual components for WordPress

Version 5.3.0 | By Vladimir Anokhin | View details
Select Simple CSS	
Simple CSS
Deactivate | Rollback
Simply add CSS to your WordPress site using an awesome CSS editor or the live Customizer.

Version 1.1 | By Tom Usborne | View details
Select Simple History	
Simple History
Deactivate | Rollback | Settings
Plugin that logs various things that occur in WordPress and then

Version 2.31.1 | By P?r Thernstr?m | View details | Donate
Select SVG Support	
SVG Support
Settings | Deactivate | Rollback
Upload SVG files to the Media Library and render SVG files inline for direct styling/animation of an SVG's internal elements using CSS/JS.

Version 2.3.15 | By Benbodhi | View details | Get Support | Donate to author | $25 Free Credit from GoWebben
Select TinyMCE Advanced	
TinyMCE Advanced
Deactivate | Settings | Rollback
Enables advanced features and plugins in TinyMCE, the visual editor in WordPress.

Version 5.2.1 | By Andrew Ozz | View details
Select Toolbar Extras	
Toolbar Extras
 Settings |  Custom Menu | Deactivate | Rollback
This plugins adds a lot of quick jump links to the WordPress Toolbar helpful for Site Builders who use Elementor and its ecosystem of add-ons and from the theme space.

Version 1.4.4 | By David Decker - DECKERWEB | View details | Support | Facebook Group | Translations | Donate | Join our Newsletter
Select UpdraftPlus - Backup/Restore	
UpdraftPlus - Backup/Restore
Add-ons / Pro Support | Settings | Deactivate | Take Tour | Rollback
Backup and restore: take backups locally, or backup to Amazon S3, Dropbox, Google Drive, Rackspace, (S)FTP, WebDAV & email, on automatic schedules.

Version 1.16.16 | By UpdraftPlus.com, DavidAnderson | View details
Select VM Menu Reorder plugin	
VM Menu Reorder plugin
Deactivate | Rollback
Menu reorder plugin is used to rearrange your dashboard area. This plugin is also useful to rearrange menu for particular user role.

Version 1.0.0 | By Milankumar Kyada | View details
Select WP Broken Link Status Checker	
WP Broken Link Status Checker
Deactivate | Rollback
Check and manage HTTP response codes of all your content site links and images.

Version 1.0.6 | By Pau Iglesias, SeedPlugins | View details
Select WP Nag Hide	
WP Nag Hide
Deactivate | Rollback
The plugin allows you to disable/hide plugin notifications and inline warnings in your admin panel.

Version 1.0 | By Milton Keynes Web Design | View details
Select WP Rollback	
WP Rollback
Deactivate | Rollback
Rollback (or forward) any www.ads-software.com plugin or theme like a boss.

Version 1.6 | By Impress.org | View details
Select WP-Optimize - Clean, Compress, Cache	
WP-Optimize - Clean, Compress, Cache
Optimize | Settings | Premium | Deactivate | Rollback
WP-Optimize makes your site fast and efficient. It cleans the database, compresses images and caches pages. Fast sites attract more traffic and users.

Version 3.0.11 | By David Anderson, Ruhani Rabin, Team Updraft | View details
Select WP-Sweep	
WP-Sweep
Deactivate | Rollback
WP-Sweep allows you to clean up unused, orphaned and duplicated data in your WordPress. It cleans up revisions, auto drafts, unapproved comments, spam comments, trashed comments, orphan post meta, orphan comment meta, orphan user meta, orphan term relationships, unused terms, duplicated post meta, duplicated comment meta, duplicated user meta and transient options. It also optimizes your database tables.

Version 1.1.0 | By Lester 'GaMerZ' Chan | View details
Select WPS Cleaner	
WPS Cleaner
Tools | Deactivate | Rollback
WPS Cleaner permet de nettoyer la base de données et le WordPress.

Version 1.4.5 | By WPServeur, NicolasKulka, christophea | View details
Select YotuWP - YouTube Gallery	
YotuWP - YouTube Gallery

Thanks for your reply. I’m sorry we didn’t get back to this earlier, but we are still working on reproducing the error. I will give you an update as soon as possible.

@reelism we’ve updated the plugin fixing some errors and adding additional support for hooks. Please let us know if you still have trouble running the plugin.

And thank you for heads up – you’re a class act! ??