Support » Plugin: WP REST Cache » Fate error after recent WordPress automated – 5.2.4 security update

  • Resolved Rory Michael Heaney


    Fatal error: Uncaught Error: Call to undefined function is_user_logged_in() in /var/www/html/wp-includes/rest-api.php:591
    Stack Trace
    thrown in /var/www/html/wp-includes/rest-api.php on line 591

    Not sure if this is me, or a clash with the latest update. My site has been using the cache plugin for several months without an issue.

Viewing 9 replies - 1 through 9 (of 9 total)
  • Thread Starter Rory Michael Heaney


    I can confirm on another project that I get the same error after upgrading to WP 5.2.4

    Same here. Issue occurs on multiple WordPress instances. Disabled the plugin for now.

    Plugin Author Richard Korthuis


    Hi @rorymheaney and @yclaes

    Thank you for using our plugin!

    We are investigating the issue and hope to release a fix later today.

    Same issue, gotta disable these auto updates on production God dammit.

    Plugin Author Richard Korthuis


    Hi @nurgiel @yclaes @rorymheaney

    We just released a new version of our plugin, which should solve this issue. Please let us know if you still have any problems!

    Thread Starter Rory Michael Heaney


    Update worked great, really appreciate it!

    I’m having the same issue with my website. Error message below:

    Fatal error: Uncaught Error: Cannot access empty property in /homepages/13/d232447960/htdocs/clickandbuilds/ChapelOnTheWeb/wp-content/themes/themify-ultra/themify/themify-wp-filters.php:569 Stack trace: #0 /homepages/13/d232447960/htdocs/clickandbuilds/ChapelOnTheWeb/wp-includes/class-wp-hook.php(286): themify_hide_themes(Array, ‘https://api.wor…’) #1 /homepages/13/d232447960/htdocs/clickandbuilds/ChapelOnTheWeb/wp-includes/plugin.php(203): WP_Hook->apply_filters(Array, Array) #2 /homepages/13/d232447960/htdocs/clickandbuilds/ChapelOnTheWeb/wp-includes/class-http.php(222): apply_filters(‘http_request_ar…’, Array, ‘https://api.wor…’) #3 /homepages/13/d232447960/htdocs/clickandbuilds/ChapelOnTheWeb/wp-includes/class-http.php(589): WP_Http->request(‘https://api.wor…’, Array) #4 /homepages/13/d232447960/htdocs/clickandbuilds/ChapelOnTheWeb/wp-includes/http.php(187): WP_Http->post(‘https://api.wor…’, Array) #5 /homepages/13/d232447960/htdocs/clickandbuilds/ChapelOnTheWeb/wp-includes/update.php(521): wp_remote_post(‘h in /homepages/13/d232447960/htdocs/clickandbuilds/ChapelOnTheWeb/wp-content/themes/themify-ultra/themify/themify-wp-filters.php on line 569

    Plugin Author Richard Korthuis


    Hi @fighter1

    I am afraid your error is different from the error mentioned in the start post of this topic. As you can see in your error message, you get an error in wp-content/themes/themify-ultra/themify/themify-wp-filters.php. So this error seems to be related to your theme and not to our plugin.
    I wanted to see if I could find the exact cause of your error, but unfortunately you are using a paid theme, so I don’t have access to the source of the theme. I am afraid I can’t help you with this error.

    Ah, makes sense. Thank you, Richard. I will reach out to Themify

Viewing 9 replies - 1 through 9 (of 9 total)
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