Support » Fixing WordPress » Can’t upgrade to 4.7, 500 error

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  • Moderator Steve Stern

    (@sterndata)

    Support Team Volunteer

    Are you using W3 Total Cache?

    No, here is a list of my plugins:
    AG Custom Admin
    Contact Form 7
    Cryout Serious Theme Settings
    Current Year and Copyright Shortcodes
    Custom CSS – Whole Site and Per Post
    Disable Comments
    Easy Property Listings
    EPL – Listing Templates
    Magic Dates
    MaxButtons
    Password Protected
    Simple Lightbox
    Wordfence Security

    Moderator Steve Stern

    (@sterndata)

    Support Team Volunteer

    500 errors are logged. Check your server’s error log.

    Also, enable wp-debug

    Error says:

    Fatal error: Call to a member function do_all_hook() on a non-object in (ROOT)/wp-includes/plugin.php on line 837

    Moderator Steve Stern

    (@sterndata)

    Support Team Volunteer

    I have tried those, to no avail.

    Moderator Steve Stern

    (@sterndata)

    Support Team Volunteer

    This may be a plugin or theme conflict. Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

    Ok, I overlooked something when I tried those things. I tried again, and it definitely has something to do with my child theme. I’m not sure what yet, but I’m working on it.

    Just wanted to let you know asap.

    *update-I isolated it to some plugin template mods I had done. These have worked for many versions of WP, but I guess it’s time to revisit how they are done.

    • This reply was modified 2 years, 7 months ago by  hpthatsme.

    I am back to being confused. It seems only to work when I have object-cache.php disbled, no matter what theme I am using.

    After much tinkering, I have simply renamed object-cache.php and the upgrade works fine. I am guessing I don’t need that file and that it was added by a plugin that was installed before I was site admin.

    Hello – I am having same problem. Once I clicked on the Update to WordPress 4.7 link in my admin dashboard, I’ve had nothing but the white screen of death (500 error).

    I am only running three plugins

    – All in One SEO
    – All in One WP Security & Firewall
    – Easy Notify Lite

    I have done the following:

    – Deleted wp-admin & wp-includes files and replaced with fresh downloaded files via FTP
    – Deleted Google Analytics plugin by Lara through file manager
    – Renamed .htaccess
    – Replaced code in .htaccess to clean code with no plugin instructions
    – Disabled plugins by renaming the plugin folder in file manager
    – Disabled theme by renaming
    – Attempted to attach Twenty Fifteen theme by renaming all others but that one

    Do you have a file called “object-cache.php” in your wp-content folder? If so, try renaming it and see if that works.

    I did a cursory look for that .php file that you mentioned earlier, but couldn’t find it. I assumed it would be the result of using a plugin that the former webmaster used that you indicated. What file would I find object-cache.php?

    Sorry you said wp-content. I’ll look again.

    I appears I do not have an object-cache.php file

Viewing 15 replies - 1 through 15 (of 16 total)
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