Random Fatal Errors

  • Cealin

    (@cealin)


    9 years, 6 months ago

    Hello,

    About two times a week my website gets random fatal errors. Removing the /wp-includes/ map and uploading a fresh one temporarily fixes the error.

    Error examples:

    Fatal error: Uncaught Error: Class 'WP_User_Meta_Session_Tokens' not found in /domain.com/htdocs/www/wp-includes/session.php:51 Stack trace: #0 
/domains/blank.com/htdocs/www/wp-includes/pluggable.php(855): WP_Session_Tokens::get_instance(1) #1 /domain.com/htdocs/www/wp-includes/user.php(95): wp_set_auth_cookie(1, false, false) #2 /domain.com/htdocs/www/wp-login.php(796): wp_signon(Array, false) #3 {main} thrown in /domain.com/htdocs/www/wp-includes/session.php on line 51

    ‘Fatal error: Uncaught Error: Call to undefined function is_blog_installed() in /domain.com/htdocs/htdocs/www/wp-includes/widgets.php:1439 Stack trace: #0 /domain.com/htdocs/htdocs/www/wp-includes/plugin.php(524): wp_widgets_init(”) #1 /domain.com/htdocs/htdocs/www/wp-settings.php(411): do_action(‘init’) #2 /domain.com/htdocs/htdocs/www/wp-config.php(90): require_once(‘/home/vhosting/…’) #3 /domain.com/htdocs/htdocs/www/wp-load.php(39): require_once(‘/home/vhosting/…’) #4 /domain.com/htdocs/htdocs/www/wp-blog-header.php(13): require_once(‘/home/vhosting/…’) #5 /domain.com/htdocs/htdocs/www/index.php(17): require(‘/home/vhosting/…’) #6 {main} thrown in /domain.com/htdocs/htdocs/www/wp-includes/widgets.php on line 1439′

    What might be causing these errors? I use WordPress 4.6, RealHomes theme 2.6, plugins: Advanced Access Manager / Akismet / Contact Form 7 / MailPoet – Contact Form 7 Integration / MailPoet Newsletters / MailPoet Newsletters Premium / SMTP / Yoast SEO.

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  • Moderator t-p

    (@t-p)

    9 years, 6 months ago

    – 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 can’t get into your admin dashboard, try resetting the plugins folder by FTP. Sometimes, an apparently inactive plugin can still cause problems. 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 Sixteen, etc.) 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 admin area, use FTP , 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. That will force your site to use it.
    – If all the above steps do not resolve the issue, then try MANUALLY 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 wp-admin and wp-includes folders and files on your server before uploading the new ones. Please read the Manual Update directions first.

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