Customize screen blank

  • 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

    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

    (@t-p)

    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 (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 , 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

    (@24sevenpro)

    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

    (@t-p)

    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)
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