Fatal error when custom variable callback function does not exist

  • Resolved !Benni

    (@benniledl)


    1 year, 10 months ago

    Hello,

    when the callback function for a custom variable does not exist, there is an error that doesn’t allow me to edit my post. Elementor just says “preview couldn’t be loaded”

    I knew the problem was this custom variable but I couldn’t remove it from the seo title because I couldn’t access the page.

    I thought the function “rank_math_register_var_replacement” should have a different behavior when the callback function does not exist so that users can keep on editing the page (removing the variable).

    This is not a support question but I thought I would share this and maybe this is helpful.

    Here is the stack trace if you need it.

    Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, function "price_replace_callsback" not found or invalid function name in /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-variable.php:188
Stack trace:
#0 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-variable.php(188): call_user_func('price_replace_c...', Array, Object(stdClass))
#1 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-replacer.php(288): RankMath\Replace_Variables\Variable->run_callback(Array, Object(stdClass))
#2 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-replacer.php(171): RankMath\Replace_Variables\Replacer->get_variable_value(Array, 1, 'price_replace')
#3 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-replacer.php(97): RankMath\Replace_Variables\Replacer->set_up_replacements('%title% registr...')
#4 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/class-helper.php(45): RankMath\Replace_Variables\Replacer->replace('%title% registr...', Object(WP_Post), Array)
#5 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/class-metadata.php(144): RankMath\Helper::replace_vars('%title% registr...', Object(WP_Post))
#6 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/class-metadata.php(108): RankMath\Metadata->maybe_replace_vars('title', '%title% registr...', Object(WP_Post))
#7 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/class-post.php(94): RankMath\Metadata->get_metadata('title', '')
#8 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/frontend/paper/class-singular.php(131): RankMath\Post::get_meta('title', 12992)
#9 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/frontend/paper/class-singular.php(38): RankMath\Paper\Singular->get_post_title(Object(WP_Post))
#10 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/frontend/paper/class-paper.php(156): RankMath\Paper\Singular->title()
#11 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/frontend/class-head.php(177): RankMath\Paper\Paper->get_title()
#12 /var/home/domain.tld/www/wp-includes/class-wp-hook.php(308): RankMath\Frontend\Head->title('')
#13 /var/home/domain.tld/www/wp-includes/plugin.php(205): WP_Hook->apply_filters('', Array)
#14 /var/home/domain.tld/www/wp-includes/general-template.php(1168): apply_filters('pre_get_documen...', '')
#15 /var/home/domain.tld/www/wp-includes/general-template.php(1292): wp_get_document_title()
#16 /var/home/domain.tld/www/wp-includes/class-wp-hook.php(308): _wp_render_title_tag()
#17 /var/home/domain.tld/www/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array)
#18 /var/home/domain.tld/www/wp-includes/plugin.php(565): WP_Hook->do_action(Array)
#19 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/traits/class-hooker.php(88): do_action_ref_array('rank_math/head', Array)
#20 /var/home/domain.tld/www/wp-content/plugins/seo-by-rank-math/includes/frontend/class-head.php(156): RankMath\Frontend\Head->do_action('head')
#21 /var/home/domain.tld/www/wp-includes/class-wp-hook.php(308): RankMath\Frontend\Head->head('')
#22 /var/home/domain.tld/www/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)
#23 /var/home/domain.tld/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#24 /var/home/domain.tld/www/wp-includes/general-template.php(3043): do_action('wp_head')
#25 /var/home/domain.tld/www/wp-content/themes/theme/header-single.php(24): wp_head()
#26 /var/home/domain.tld/www/wp-includes/template.php(785): require('/var/home/fotok...')
#27 /var/home/domain.tld/www/wp-includes/template.php(718): load_template('/var/home/fotok...', false, Array)
#28 /var/home/domain.tld/www/wp-includes/general-template.php(204): locate_template(Array, true, false, Array)
#29 /var/home/domain.tld/www/wp-content/themes/theme/header.php(12): get_template_part('header-single')
#30 /var/home/domain.tld/www/wp-includes/template.php(783): require_once('/var/home/fotok...')
#31 /var/home/domain.tld/www/wp-includes/template.php(718): load_template('/var/home/fotok...', true, Array)
#32 /var/home/domain.tld/www/wp-includes/general-template.php(48): locate_template(Array, true, true, Array)
#33 /var/home/domain.tld/www/wp-content/themes/theme/inc/mods/compatibility/elementor/page-templates/elementor-page.php(19): get_header()
#34 /var/home/domain.tld/www/wp-includes/template-loader.php(106): include('/var/home/fotok...')
#35 /var/home/domain.tld/www/wp-blog-header.php(19): require_once('/var/home/fotok...')
#36 /var/home/domain.tld/www/index.php(17): require('/var/home/fotok...')
#37 {main}
  thrown
Viewing 1 replies (of 1 total)
  • Plugin Support Rank Math Support

    (@rankmathteam)

    Hello @benniledl,

    Thank you for contacting support.

    We cannot change the behavior of this function as it follows the natural flow of any PHP code. This is not only specific to our plugin but any function that accepts a callback will throw a fatal error if that callback cannot be found.

    In such cases you simply need to remove the code used to generate the custom variable and the page would be accessible once again.

    Don’t hesitate to get in touch if you have any other questions.

Viewing 1 replies (of 1 total)
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