No access to Dashboard after update to 4.1.1 from 4.0

  • 2niels

    (@2niels)


    10 years ago

    I’ve tried to update the site to WordPress 4.1.1 from 4.0 today by using the standard ‘update’ system from within the site’s WordPress Dashboard.

    The process seemed to be taking a very long time and I left it (supposedly updating) for around an hour and a half, without navigating away from the update screen.

    The screen never changed (in my experience WordPress updates take around a minute and full install only 2 or 3), so I eventually clicked on the menu to go back to the Dashboard home.

    I then got a completely a blank page (ie, no Dashboard menu items at all) with this error message:

    “Fatal error: Call to undefined function wp_json_encode() in /websites/123reg/LinuxPackage21/th/eg/eo/thegeorgeinnfrant.co.uk/public_html/wp-admin/includes/misc.php on line 668”

    The website itself remains visible.

    I guess I’ll need to do a manual restore via FTP, but the instruction say to deactivate all plugins. As I no longer have access to the Dashboard, I’m not able to do that.

    Any suggestions gratefully accepted.

Viewing 2 replies - 1 through 2 (of 2 total)
  • Moderator t-p

    (@t-p)

    try a few basic troubleshooting steps:
    – Flushing any caching plugins you might be running, as well as server and/or browser caches.
    – deactivating 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). When you can’t get into your admin dashboard, try deactivating via FTP or SFTP or whatever file management application provided by your hosting provider (cPanel…). 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.
    – If that does not resolve the issue, try switching to the unedited default Twenty Fifteen theme for a moment using the WP dashboard to rule out any theme-specific issue (theme functions can interfere like plugins). When you don’t have access to your admin area, use FTP or SFTP or whatever file management application your host provides. 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. That will force your site to use it.
    – If that does not resolve the issue, try resetting the plugins foldervia FTP or SFTP or whatever file management application your host provides. Sometimes, an apparently inactive plugin can still cause problems.
    – If all the above steps do not resolve the issue, then try MANUAL updating. Download a fresh copy of the WordPress .zip file to your computer, unzip it, and use that to copy up all files and folders EXCEPT the wp-config.php file and the /wp-content/ directory. You may need to delete the old copies of files & folder on your server before uploading the new ones. Read the Manual Update directions first.
    – If you haven’t already done, always backup everything (including your database) before doing any actions, just in case something really goes wrong.

    Thread Starter 2niels

    (@2niels)

    Thanks for that Tara.

    I’ve no access via Dashboard, but have been able to get at the files using the host control panel. So fare I’ve tried a couple of your suggestions

    Renamed the plugins folder: still no access to Dashboard
    Renamed current theme, forcing default to Twenty Fourteen: still no access to Dashboard

    I’ll try your suggestion of renaming the plugins folder later and, if no luck, then a manual update.

    I’ll let you know how I get on – thanks for your help :o)

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