Title: Not working, seeing errors in firebug
Last modified: August 30, 2016

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# Not working, seeing errors in firebug

 *  [Ovidiu](https://wordpress.org/support/users/ovidiu/)
 * (@ovidiu)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/not-working-seeing-errors-in-firebug/)
 * latest WP, latest version of your plugin, upon accessing the page I check with
   the chrome developer tools and see:
 * > Uncaught TypeError: CodeMirror.registerHelper is not a function
   >  lint.js:187
   > Uncaught TypeError: CodeMirror.defineOption is not a function css-lint.js:18
   > Uncaught TypeError: CodeMirror.registerHelper is not a function show-hint.js:
   > 347 Uncaught TypeError: CodeMirror.registerHelper is not a function load-scripts.
   > php:274 Uncaught ReferenceError: _ is not defined editor.js:1506 Uncaught ReferenceError:_
   > is not defined
 * Screenshot: [http://screencast.com/t/AbxmhK7hZSh](http://screencast.com/t/AbxmhK7hZSh)
 * [https://wordpress.org/plugins/so-css/](https://wordpress.org/plugins/so-css/)

Viewing 1 replies (of 1 total)

 *  [scsolution](https://wordpress.org/support/users/scsolution/)
 * (@scsolution)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/not-working-seeing-errors-in-firebug/#post-6689815)
 * I get the same errors but my preview box is also completely blank. I have turned
   off wp-supercache and css minifying plugins and its still not working.

Viewing 1 replies (of 1 total)

The topic ‘Not working, seeing errors in firebug’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [scsolution](https://wordpress.org/support/users/scsolution/)
 * Last activity: [10 years, 5 months ago](https://wordpress.org/support/topic/not-working-seeing-errors-in-firebug/#post-6689815)
 * Status: not resolved