Fatal error: Uncaught Error: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "disable_emojis_remove_dns_prefetch" not found or invalid function name
in /home/thesisdn/stemcell.zone/wp-includes/class-wp-hook.php on line 307

Call stack:

  1. WP_Hook::apply_filters()
    wp-includes/plugin.php:191
  2. apply_filters()
    wp-includes/general-template.php:3353
  3. wp_resource_hints()
    wp-includes/class-wp-hook.php:307
  4. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:331
  5. WP_Hook::do_action()
    wp-includes/plugin.php:476
  6. do_action()
    wp-includes/general-template.php:3042
  7. wp_head()
    wp-content/themes/dna/header.php:22
  8. require_once()
    wp-includes/template.php:770
  9. load_template()
    wp-includes/template.php:716
  10. locate_template()
    wp-includes/general-template.php:48
  11. get_header()
    wp-content/themes/dna/single.php:10
  12. include()
    wp-includes/template-loader.php:106
  13. require_once()
    wp-blog-header.php:19
  14. require()
    index.php:17

Query Monitor


Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "disable_emojis_remove_dns_prefetch" not found or invalid function name in /home/thesisdn/stemcell.zone/wp-includes/class-wp-hook.php:307 Stack trace: #0 /home/thesisdn/stemcell.zone/wp-includes/plugin.php(191): WP_Hook->apply_filters() #1 /home/thesisdn/stemcell.zone/wp-includes/general-template.php(3353): apply_filters() #2 /home/thesisdn/stemcell.zone/wp-includes/class-wp-hook.php(307): wp_resource_hints() #3 /home/thesisdn/stemcell.zone/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters() #4 /home/thesisdn/stemcell.zone/wp-includes/plugin.php(476): WP_Hook->do_action() #5 /home/thesisdn/stemcell.zone/wp-includes/general-template.php(3042): do_action() #6 /home/thesisdn/stemcell.zone/wp-content/themes/dna/header.php(22): wp_head() #7 /home/thesisdn/stemcell.zone/wp-includes/template.php(770): require_once('/home/thesisdn/...') #8 /home/thesisdn/stemcell.zone/wp-includes/template.php(716): load_template() #9 /home/thesisdn/stemcell.zone/wp-includes/general-template.php(48): locate_template() #10 /home/thesisdn/stemcell.zone/wp-content/themes/dna/single.php(10): get_header() #11 /home/thesisdn/stemcell.zone/wp-includes/template-loader.php(106): include('/home/thesisdn/...') #12 /home/thesisdn/stemcell.zone/wp-blog-header.php(19): require_once('/home/thesisdn/...') #13 /home/thesisdn/stemcell.zone/index.php(17): require('/home/thesisdn/...') #14 {main} thrown in /home/thesisdn/stemcell.zone/wp-includes/class-wp-hook.php on line 307