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https://que.com/fatal-error-call-to-a-member-function-do_all_hook-on-a-non-object-in-homepublic_htmlwp-includesplugin-php-on-line-837/
Resolved. Fatal error: Call to a member function do_all_hook() on a non-object in /home/public_html/wp-includes/plugin.php on line 837