Title: Customize screen blank Last modified: October 4, 2017 --- # Customize screen blank * [24sevenpro](https://wordpress.org/support/users/24sevenpro/) * (@24sevenpro) * [8 years, 7 months ago](https://wordpress.org/support/topic/customize-screen-blank-2/) * Hi I am getting the errors below when I try to go into the Appearance -> Customize screen. Is this some kind of server host issue or something with an update to wordpress? I haven’t gone into this screen in a few weeks and it was working fine as far as I remember but now 2 of the sites I work with are having this type of error and the screen is blank with no menu. I have seen a handful of posts with the same issues that are over 5 months old and none have any real resolution posted on them that worked for me. * some screenshots of what we see: [https://imgur.com/a/Z4q6R](https://imgur.com/a/Z4q6R) * Failed to load resource: the server responded with a status of 500 (Internal Server Error) admin-widgets.js:246 Uncaught ReferenceError: jQuery is not defined at admin-widgets.js:246 core.js:166 Uncaught ReferenceError: jQuery is not defined at core.js:166 portability.js:576 Uncaught ReferenceError: jQuery is not defined at portability.js:576 display-all-image-sizes.js:35 Uncaught ReferenceError: jQuery is not defined at display-all-image-sizes.js:35 wp-color-picker-alpha. min.js:8 Uncaught ReferenceError: jQuery is not defined at wp-color-picker-alpha. min.js:8 media-widgets.min.js:1 Uncaught ReferenceError: wp is not defined at media-widgets.min.js:1 customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249% 26action%3Dedit:90 Uncaught ReferenceError: wp is not defined at customize.php? return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249%26action%3Dedit:90 media-audio-widget. min.js:1 Uncaught ReferenceError: wp is not defined at media-audio-widget.min. js:1 customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249%26action%3Dedit: 94 Uncaught ReferenceError: wp is not defined at customize.php?return=%2Fwp-admin% 2Fpost.php%3Fpost%3D12249%26action%3Dedit:94 media-image-widget.min.js:1 Uncaught ReferenceError: wp is not defined at media-image-widget.min.js:1 customize.php? return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249%26action%3Dedit:102 Uncaught ReferenceError: wp is not defined at customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249% 26action%3Dedit:102 media-video-widget.min.js:1 Uncaught ReferenceError: wp is not defined at media-video-widget.min.js:1 customize.php?return=%2Fwp-admin%2Fpost. php%3Fpost%3D12249%26action%3Dedit:110 Uncaught ReferenceError: wp is not defined at customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249%26action%3Dedit: 110 text-widgets.min.js:1 Uncaught ReferenceError: jQuery is not defined at text- widgets.min.js:1 customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249%26action% 3Dedit:119 Uncaught TypeError: Cannot read property ‘init’ of undefined at customize. php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249%26action%3Dedit:119 customize. php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D12249%26action%3Dedit:142 Uncaught ReferenceError: jQuery is not defined at customize.php?return=%2Fwp-admin%2Fpost. php%3Fpost%3D12249%26action%3Dedit:142 load-scripts.php?c=0&load[]=mce-view,imgareaselect, image-edit,customize-base,customize-controls,customize-widgets,accordion,customize- nav-menus,customize-mo&load[]=dels,customize-views,quicktags,wplink,jquery-ui- position,jquery-ui-menu,jquery-ui-autocomplete,thickbox,media-upload&ver=4.8.2: 1 Uncaught ReferenceError: Backbone is not defined at load-scripts.php?c=0&load[] =mce-view,imgareaselect,image-edit,customize-base,customize-controls,customize- widgets,accordion,customize-nav-menus,customize-mo&load[]=dels,customize-views, quicktags,wplink,jquery-ui-position,jquery-ui-menu,jquery-ui-autocomplete,thickbox, media-upload&ver=4.8.2:1 at load-scripts.php?c=0&load[]=mce-view,imgareaselect, image-edit,customize-base,customize-controls,customize-widgets,accordion,customize- nav-menus,customize-mo&load[]=dels,customize-views,quicktags,wplink,jquery-ui- position,jquery-ui-menu,jquery-ui-autocomplete,thickbox,media-upload&ver=4.8.2: 1 wp-seo-admin-global-502.min.js:1 Uncaught ReferenceError: jQuery is not defined at Object.d.1 (wp-seo-admin-global-502.min.js:1) at e (wp-seo-admin-global-502. min.js:1) at a (wp-seo-admin-global-502.min.js:1) at wp-seo-admin-global-502. min.js:1 widgets.js:61 Uncaught ReferenceError: jQuery is not defined at widgets. js:61 theme-customizer-controls.js:654 Uncaught ReferenceError: jQuery is not defined at theme-customizer-controls.js:654 et_google_fonts.js:199 Uncaught ReferenceError: jQuery is not defined at et_google_fonts.js:199 Viewing 3 replies - 1 through 3 (of 3 total) * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [8 years, 7 months ago](https://wordpress.org/support/topic/customize-screen-blank-2/#post-9557152) * Try: – deactivating ALL (yes all) plugins temporarily to see if this resolves the problem (plugin functions can interfere). If this works, re-activate them individually (one-by-one) to find the problematic plugin(s). – If you don’t have access to your Dashboard’s Plugins page, try [manually resetting your plugins](https://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F)( no Dashboard access required). If that resolves the issue, reactivate each one individually until you find the cause. Also remember to deactivate any plugins in the mu-plugins folder (if you have created such folder). The easiest way is to rename that folder to mu-plugins-old. – switching to the unedited default Theme (Twenty Seventeen.) for a moment using the WP dashboard to rule out any theme-specific issue (theme functions can interfere like plugins). If you don’t have access to your Dashboard’s Appearance page, use [FTP/ SFTP ](http://codex.wordpress.org/FTP_Clients), or your web-host’s cPanel or whatever file management application your host provides( no Dashboard access required). Navigate to /wp-content/themes/ and switch to the default theme by renaming your current theme’s folder by adding “-old” to the end of the folder name. Alternately, you can remove other themes except the default theme (Twenty Sixteen.). That will force your site to use it. * Thread Starter [24sevenpro](https://wordpress.org/support/users/24sevenpro/) * (@24sevenpro) * [8 years, 7 months ago](https://wordpress.org/support/topic/customize-screen-blank-2/#post-9557221) * Thank you for your reply t-p. I tried what you said but each time i checked the customize page is still blank. I have made a copy of the site and uploaded it to a local host on my pc and also a personal host that i use and it works fine there. Not sure why this stopped working on this host we are using at work all of a sudden. In case this is a server side issue I sent my web host the info here also but if anyone has any more insight to what is going on please let us know! * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [8 years, 7 months ago](https://wordpress.org/support/topic/customize-screen-blank-2/#post-9557245) * > Not sure why this stopped working on this host we are using at work all of > a sudden * Try contacting your host and discuss with them what changed. Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘Customize screen blank’ is closed to new replies. * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 3 replies * 2 participants * Last reply from: [t-p](https://wordpress.org/support/users/t-p/) * Last activity: [8 years, 7 months ago](https://wordpress.org/support/topic/customize-screen-blank-2/#post-9557245) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics