Support » Fixing WordPress » Call to undefined function apply_filters()

  • techlevels


    Fatal error: Uncaught Error: Call to undefined function apply_filters() in /home/pojocom/public_html/wp-includes/error-protection.php:119 Stack trace: #0 /home/pojocom/public_html/wp-includes/error-protection.php(83): wp_is_fatal_error_handler_enabled() #1 /home/pojocom/public_html/wp-settings.php(64): wp_register_fatal_error_handler() #2 /home/pojocom/public_html/wp-config.php(93): require_once(‘/home/pojocom/p…’) #3 /home/pojocom/public_html/wp-load.php(37): require_once(‘/home/pojocom/p…’) #4 /home/pojocom/public_html/wp-blog-header.php(13): require_once(‘/home/pojocom/p…’) #5 /home/pojocom/public_html/index.php(17): require(‘/home/pojocom/p…’) #6 {main} thrown in /home/pojocom/public_html/wp-includes/error-protection.php on line 119

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  • ben.greeley


    @techlevels At first glance, this appears to be either an incompatibility of your WordPress version with a theme or plugin or an incomplete WordPress install/upgrade.

    Some things you could try to troubleshoot:
    1) Deactivate all plugins temporarily to see if this resolves the problem. If this works, re-activate them one by one to find the problematic plugin(s). You can use FTP or your host’s file management system if you can’t access your admin dashboard.
    2) Switch your theme to a default theme such as Twenty Twenty and see if that makes a difference. Same advice as in #1 – if you aren’t able to use the admin, try uploading via FTP and removing the other themes temporarily
    3) Follow the manual update instructions to manually update WordPress. This will reinstall the newest version of core files in case an update or installation wasn’t able to complete successfully.

    Good luck, and I hope this helps put you on the right path.

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