Fatal error: Uncaught Error: Attempt to modify property "query" on null in /var/www/williamsdb/wp-content/plugins/wdb-wikipedia/wdb-wikipedia.php:35 Stack trace: #0 /var/www/williamsdb/wp-includes/shortcodes.php(434): wdb_wikipedia() #1 [internal function]: do_shortcode_tag() #2 /var/www/williamsdb/wp-includes/shortcodes.php(273): preg_replace_callback() #3 /var/www/williamsdb/wp-includes/class-wp-hook.php(324): do_shortcode() #4 /var/www/williamsdb/wp-includes/plugin.php(205): WP_Hook->apply_filters() #5 /var/www/williamsdb/wp-includes/post-template.php(256): apply_filters() #6 /var/www/williamsdb/wp-content/themes/xtra/functions.php(2959): the_content() #7 /var/www/williamsdb/wp-content/themes/xtra/page.php(19): Codevz_Core_Theme::generate_page() #8 /var/www/williamsdb/wp-includes/template-loader.php(106): include('...') #9 /var/www/williamsdb/wp-blog-header.php(19): require_once('...') #10 /var/www/williamsdb/index.php(17): require('...') #11 {main} thrown in /var/www/williamsdb/wp-content/plugins/wdb-wikipedia/wdb-wikipedia.php on line 35