Title: MinQueue not working – Uncaught TypeError
Last modified: August 21, 2016

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# MinQueue not working – Uncaught TypeError

 *  [robertocmcosta](https://wordpress.org/support/users/robertocmcosta/)
 * (@robertocmcosta)
 * [12 years, 7 months ago](https://wordpress.org/support/topic/minqueue-not-working-uncaught-typeerror/)
 * Hi,
 * I’ve just been introduced to your plugin. I decided to try it on a test site 
   running on MAMP and it’s failing to work with the following msg from the inspector(
   chrome):
 * Uncaught TypeError: Cannot call method ‘appendChild’ of null
 * Have I done anything wrong?
 * [http://wordpress.org/plugins/minqueue/](http://wordpress.org/plugins/minqueue/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Author [Matthew Haines-Young](https://wordpress.org/support/users/mattheu/)
 * (@mattheu)
 * [12 years, 7 months ago](https://wordpress.org/support/topic/minqueue-not-working-uncaught-typeerror/#post-4285777)
 * Hi.
 * This sounds like a bug. Where are you seeing this error – in the admin? Also 
   does chrome give you a line number where this error occurred?
 * Can you also check that you are not loading a custom version of jquery in the
   admin as this may cause problems.
 * Hopefully we can get to the bottom of the problem.
 *  Thread Starter [robertocmcosta](https://wordpress.org/support/users/robertocmcosta/)
 * (@robertocmcosta)
 * [12 years, 7 months ago](https://wordpress.org/support/topic/minqueue-not-working-uncaught-typeerror/#post-4285829)
 * Hi Matthews,
 * First, thanks for taking the time to answer me. No, I’m on the front-end of the
   site. On the software side:
    wordpress’ default jquery 1.10.2 loaded wordpress
   3.7.1 and a bunch of plugins.
 * The full log in inspector is:
    Uncaught TypeError: Cannot call method ‘appendChild’
   of null (index):472 MinQueue.insertButton (index):472 MinQueue.init (index):485(
   anonymous function) (index):493
 * I can see minqueue scripts in those lines but nothing else happens. I mean I 
   enabled the minification of styles putting in the handlers “style, formidablepro”
   to see the plugin in action. So far all I get is the error above.
    I also tried
   installing the plugin on the live site (server config different from MAMP) with
   the same results.
 *  Plugin Author [Matthew Haines-Young](https://wordpress.org/support/users/mattheu/)
 * (@mattheu)
 * [12 years, 7 months ago](https://wordpress.org/support/topic/minqueue-not-working-uncaught-typeerror/#post-4285830)
 * Hi,
 * Are you disabling the admin bar on the front end of the site? This is required
   to use the helper tool – although the actual minification proccess will work 
   fine.
 * However it shouldn’t cause a JS error. I have made a fix if you get the latest
   version from [github](https://github.com/mattheu/MinQueue).
 * Direct link to zip: [https://github.com/mattheu/MinQueue/archive/master.zip](https://github.com/mattheu/MinQueue/archive/master.zip)
 *  Thread Starter [robertocmcosta](https://wordpress.org/support/users/robertocmcosta/)
 * (@robertocmcosta)
 * [12 years, 7 months ago](https://wordpress.org/support/topic/minqueue-not-working-uncaught-typeerror/#post-4285848)
 * Now I don’t see the error, but no minification yet.
    Maybe I’m the one to blame.
   The way I’m entering the style handles maybe wrong. I’m entering “style, formidablepro”
   in the Style minification queue(s) form. Is it right? I also tried entering “
   jquery, utilities (a custom script)” in the Script minification queue(s) and 
   it works (scripts only)! A file named ​minqueue-349ff3a7-cb2d6813.js is called.
   However jquery.js is being loaded separately. Shouldn’t it disappear since it’s
   included in the minified version? As for the styles, do I have to enter style
   names in another way to make it work?
 *  Plugin Author [Matthew Haines-Young](https://wordpress.org/support/users/mattheu/)
 * (@mattheu)
 * [12 years, 7 months ago](https://wordpress.org/support/topic/minqueue-not-working-uncaught-typeerror/#post-4285860)
 * The names are just the handles that were used when enqueuing the scripts.
 * RE JQuery – if you are adding the handle to the list of scripts, it should be
   processed. Note that the handle used by jquery that is bundled with WordPress
   is jquery-core – it also loads jquery-migrate. I usually minify both.
 * Check the generated file – the handles for scripts that are enqueued in it are
   displayed at the top of the file in a comment. Is jQuery added here?
 * Also confirm that there isn’t 2 copies of jQuery being loaded. Sometimes plugins
   do not always load it correctly.

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘MinQueue not working – Uncaught TypeError’ is closed to new replies.

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 * 5 replies
 * 2 participants
 * Last reply from: [Matthew Haines-Young](https://wordpress.org/support/users/mattheu/)
 * Last activity: [12 years, 7 months ago](https://wordpress.org/support/topic/minqueue-not-working-uncaught-typeerror/#post-4285860)
 * Status: not resolved