Title: Plugin not working on WordPress Version 5.5.3
Last modified: December 3, 2020

---

# Plugin not working on WordPress Version 5.5.3

 *  Resolved [dektech2018](https://wordpress.org/support/users/dektech2018/)
 * (@dektech2018)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/plugin-not-working-on-wordpress-version-5-5-3/)
 * By Navigating to the page, you will notice that the plug-in is in error below
   the featured posts. Please find the error below as well.
 * Warning: preg_match(): Compilation failed: invalid range in character class at
   offset 4 in /home/customer/www/duckettholsteins.com/public_html/wp-content/plugins/
   lightbox-plus/classes/shd.class.php on line 1384
 * Warning: preg_match_all(): Compilation failed: invalid range in character class
   at offset 4 in /home/customer/www/duckettholsteins.com/public_html/wp-content/
   plugins/lightbox-plus/classes/shd.class.php on line 700
 * Warning: Invalid argument supplied for foreach() in /home/customer/www/duckettholsteins.
   com/public_html/wp-content/plugins/lightbox-plus/classes/shd.class.php on line
   707
 * Warning: preg_match_all(): Compilation failed: invalid range in character class
   at offset 4 in /home/customer/www/duckettholsteins.com/public_html/wp-content/
   plugins/lightbox-plus/classes/shd.class.php on line 700
 * Warning: Invalid argument supplied for foreach() in /home/customer/www/duckettholsteins.
   com/public_html/wp-content/plugins/lightbox-plus/classes/shd.class.php on line
   707
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fplugin-not-working-on-wordpress-version-5-5-3%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Noor Alam](https://wordpress.org/support/users/naa986/)
 * (@naa986)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/plugin-not-working-on-wordpress-version-5-5-3/#post-13747877)
 * [@dektech2018](https://wordpress.org/support/users/dektech2018/), These errors
   are coming from a plugin named “lightbox-plus”. This is not “lightbox-plus”.
 *  [iisg](https://wordpress.org/support/users/iisg/)
 * (@iisg)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/plugin-not-working-on-wordpress-version-5-5-3/#post-14294604)
 * Has anyone fixed this error?
 *  Plugin Author [Noor Alam](https://wordpress.org/support/users/naa986/)
 * (@naa986)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/plugin-not-working-on-wordpress-version-5-5-3/#post-14296245)
 * [@iisg](https://wordpress.org/support/users/iisg/), You can contact the developer
   of that plugin.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Plugin not working on WordPress Version 5.5.3’ is closed to new replies.

 * ![](https://ps.w.org/wp-colorbox/assets/icon-128x128.png?rev=2610062)
 * [WP Colorbox](https://wordpress.org/plugins/wp-colorbox/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-colorbox/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-colorbox/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-colorbox/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-colorbox/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-colorbox/reviews/)

 * 3 replies
 * 3 participants
 * Last reply from: [Noor Alam](https://wordpress.org/support/users/naa986/)
 * Last activity: [5 years, 2 months ago](https://wordpress.org/support/topic/plugin-not-working-on-wordpress-version-5-5-3/#post-14296245)
 * Status: resolved