Title: TypeError: display_type is undefined
Last modified: November 4, 2019

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# TypeError: display_type is undefined

 *  Resolved [jeensg](https://wordpress.org/support/users/jeensg/)
 * (@jeensg)
 * [6 years, 7 months ago](https://wordpress.org/support/topic/typeerror-display_type-is-undefined/)
 * Hey, I aleady had this problem once and don’t find any clue any more on how to
   solve this issue. All our galleries on the corresponding pages are not shown 
   any more. I can delete them in the block, when trying to include them again, 
   we found some problem in the console, when I hit the button to include the selected
   gallery.
 * I checked the forum and the rest of the net for the error, but I don’t find any
   hint. Where can I go on or does anybody know where to look further on this topic/
   error?
 *     ```
       TypeError: display_type is undefined display_tab.js:335:13
       NextJS 2
               to_shortcode
               clicked
           clicked self-hosted:1019
           Backbone 2
               dispatch
       ```
   
 * We use WordPress 5.2.4 and NextGen 3.2.19
 * Thanks in advance, Jens.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ftypeerror-display_type-is-undefined%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Mihai Ceban](https://wordpress.org/support/users/mihaiimagely/)
 * (@mihaiimagely)
 * [6 years, 7 months ago](https://wordpress.org/support/topic/typeerror-display_type-is-undefined/#post-12097462)
 * Hi [@jeensg](https://wordpress.org/support/users/jeensg/),
 * Errors like this can sometimes occur due to a conflict on your site. We would
   like to have you try a few things. Please try deactivating all of your plugins,
   clearing your browser cache (and site caches if you are using a caching plugin),
   then reactivating the NextGEN Gallery plugin.
 * If this fixes the problem it was likely one of the deactivated plugins causing
   the issue. Now, retrace your steps activating each plugin (one at a time) and
   re-checking to see if the problem returns. If it does then that last activated
   plugin was probably the one. Keep reactivating the plugins as it is also best
   to keep checking after each plugin. Sometimes there may be more than one plugin
   on a site that will create an issue. If you do find one (or more) plugins causing
   this problem, we would greatly appreciate your feedback on them so that our developers
   can address them.
 * Also to note, in rare cases, it may be the theme itself that is causing a conflict
   so while you have just the NextGEN plugin activated, you might consider temporarily
   switching to one of the WordPress Twenty series themes and see if this corrects
   the issue.
    -  This reply was modified 6 years, 7 months ago by [Mihai Ceban](https://wordpress.org/support/users/mihaiimagely/).
 *  Thread Starter [jeensg](https://wordpress.org/support/users/jeensg/)
 * (@jeensg)
 * [6 years, 7 months ago](https://wordpress.org/support/topic/typeerror-display_type-is-undefined/#post-12104583)
 * Well 🙁
 * At the end it helped. Deactivated all plugins and reactivated all of them, it
   worked.
 * Afterwards I tried with a copy from before, where it didn’t work … and it only
   needed deactivating NextGen Gallery and reactivating it. Does this still mean,
   that it is a conflict with one of the other plugins?
 * Thanks for help anyway.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘TypeError: display_type is undefined’ is closed to new replies.

 * ![](https://ps.w.org/nextgen-gallery/assets/icon-256x256.png?rev=2083961)
 * [Photo Gallery, Sliders, Proofing and Themes - NextGEN Gallery](https://wordpress.org/plugins/nextgen-gallery/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/nextgen-gallery/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/nextgen-gallery/)
 * [Active Topics](https://wordpress.org/support/plugin/nextgen-gallery/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/nextgen-gallery/unresolved/)
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 * 2 replies
 * 2 participants
 * Last reply from: [jeensg](https://wordpress.org/support/users/jeensg/)
 * Last activity: [6 years, 7 months ago](https://wordpress.org/support/topic/typeerror-display_type-is-undefined/#post-12104583)
 * Status: resolved