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    There has been a critical error on this website following plugin update

    Posted by Stuart Reeves on Jul 23, 2026 at 10:00 am

    Hi,

    The following plugin’s have been updated on our WordPress site:

    – LearnDash LMS (from version 5.1.7 to 5.1.8)
    – LearnDash LMS – Notifications (from version 1.6.8 to 1.6.9)
    – LearnDash LMS – ProPanel (from version 3.1.1 to 3.1.2)

    Since this, we have “There has been a critical error on this website.” on any lesson on our website!

    How can I fix this please?

    Stuart Reeves replied 6 hours, 58 minutes ago 1 Member · 1 Reply
  • 1 Reply

  • Stuart Reeves

    Member
    Jul 23, 2026 at 10:58 am

    I have the follow debug notices:

    Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the learndash-achievements domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/functions.php on line 6170

    Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the learndash-migration domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/functions.php on line 6170

    Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the elementor domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/functions.php on line 6170

    Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the elementor-pro domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/functions.php on line 6170

    Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the uncanny-learndash-groups domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/functions.php on line 6170

    Deprecated: File /home/customer/www/qnukacademy.co.uk/public_html/wp-content/plugins/learndash-notifications/src/deprecated/LearnDash_Notifications.php is deprecated since version 1.6.3 with no alternative available. in /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/functions.php on line 6170

    Fatal error: Uncaught TypeError: LearnDash\Notifications\Compat\WPML::filter_has_access(): Argument #3 ($user_id) must be of type int, null given, called in /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/class-wp-hook.php on line 341 and defined in /home/customer/www/qnukacademy.co.uk/public_html/wp-content/plugins/learndash-notifications/src/Notifications/Compat/WPML.php:64 Stack trace: #0 /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/class-wp-hook.php(341): LearnDash\Notifications\Compat\WPML->filter_has_access(true, 185, NULL) #1 /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters(true, Array) #2 /home/customer/www/qnukacademy.co.uk/public_html/wp-content/plugins/sfwd-lms/includes/course/ld-course-user-functions.php(71): apply_filters(‘sfwd_lms_has_ac…’, true, 185, NULL) #3 /home/customer/www/qnukacademy.co.uk/public_html/wp-content/plugins/sfwd-lms/includes/course/ld-course-user-functions.php(196): sfwd_lms_has_access(185) #4 /home/customer/www/qnukacademy.co.uk/public_html/wp-content/plugins/sfwd-lms/includes/class-ld-cpt-instance.php(957): sfwd_lms_access_redirect(185) #5 /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/class-wp-hook.php(341): SFWD_CPT_Instance->template_redirect_access(”) #6 /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(NULL, Array) #7 /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/plugin.php(522): WP_Hook->do_action(Array) #8 /home/customer/www/qnukacademy.co.uk/public_html/wp-includes/template-loader.php(23): do_action(‘template_redire…’) #9 /home/customer/www/qnukacademy.co.uk/public_html/wp-blog-header.php(19): require_once(‘/home/customer/…’) #10 /home/customer/www/qnukacademy.co.uk/public_html/index.php(17): require(‘/home/customer/…’) #11 {main} thrown in /home/customer/www/qnukacademy.co.uk/public_html/wp-content/plugins/learndash-notifications/src/Notifications/Compat/WPML.php on line 64

    I have deactivated the <strong style=”font-family: inherit; font-size: inherit;”>LearnDash LMS – Notifications plugin for now, but will need a better solution.

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