Critical Error upon activating Instant Indexing

  • Upon just hitting Activate, i get the following PHP Error on Instant Indexing:
    Fatal error: Uncaught Error: Call to undefined function wp_reset_vars() in /homepages/20/d507307962/htdocs/clickandbuilds/GooLoo/wp-admin/post.php:17 Stack trace: #0 /homepages/20/d507307962/htdocs/clickandbuilds/GooLoo/wp-content/plugins/301-redirects/libs/geoip/autoload.php(40): include() #1 [internal function]: mmdb_autoload(‘post’) #2 [internal function]: spl_autoload_call(‘post’) #3 /homepages/20/d507307962/htdocs/clickandbuilds/GooLoo/wp-content/plugins/seo-by-rank-math/vendor/cmb2/cmb2/includes/CMB2_Field.php(1624): is_callable(Array) #4 /homepages/20/d507307962/htdocs/clickandbuilds/GooLoo/wp-content/plugins/seo-by-rank-math/vendor/cmb2/cmb2/includes/CMB2_Field.php(1387): CMB2_Field->convert_deprecated_params(Array) #5 /homepages/20/d507307962/htdocs/clickandbuilds/GooLoo/wp-content/plugins/seo-by-rank-math/vendor/cmb2/cmb2/includes/CMB2_Field.php(148): CMB2_Field->_set_field_defaults(Array) #6 /homepages/20/d507307962/htdocs/clickandbuilds/GooLoo/wp-content/plugins/seo-by-rank-math/vendor/cmb2/cmb2/includes/CMB2. in /homepages/20/d507307962/htdocs/clickandbuilds/GooLoo/wp-admin/post.php on line 17
    Es gab einen kritischen Fehler auf deiner Website. Bitte überprüfe den Posteingang deiner Website-Administrator-E-Mail-Adresse für weitere Anweisungen.

    Erfahre mehr über die Fehlerbehebung in WordPress.

Viewing 6 replies - 1 through 6 (of 6 total)
  • Hello,

    Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.

    This could suggest that there is a conflict between Rank Math and one of your installed plugins. To determine that, please follow this troubleshooting guide:

    I hope this resolves your issue.

    I know that this was caused by 301 Redirects Pro as it also is visible in the PHP Error List. The thing is: How do i fix that or how will RankMath fix that in the future?


    Does the Redirection plugin show errors even when the indexing plugin is not enabled ? If this is the case, the issue is likely to be with the redirection plugin.

    This is only happening on your site where you have the specified plugin active. Since it is not happening with other sites even from testing on our end, I recommend checking with the redirection plugin support to look into the errors reported and fix them

    That should resolve the issue for your site. Hope this helps. Thanks


    I wanted to add that it looks like 301 Redirects Pro is using the CMB library as well. It might be using an old library.

    Please contact the plugin author or use the Rank Math redirect option instead of a separate plugin.

    Looking forward to helping you. Thank you.

    Gonna check with them, thank you! 🙂


    Glad that helped.

    Please feel free to reach out to us again in case you need any other assistance.

    We are here to help.

    Thank you.

Viewing 6 replies - 1 through 6 (of 6 total)

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