Fatal error: Uncaught Error: Call to a member function get_category_ids() on boolean in C:\inetpub\vhosts\saptarshiclasses.com\httpdocs\wp-content\plugins\classregistration\inc\user_registration.php:23 Stack trace: #0 C:\inetpub\vhosts\saptarshiclasses.com\httpdocs\wp-content\plugins\classregistration\classRegistration.php(74): require_once() #1 C:\inetpub\vhosts\saptarshiclasses.com\httpdocs\wp-includes\shortcodes.php(356): rre_shortcode_init('', '', 'class_registrat...') #2 [internal function]: do_shortcode_tag(Array) #3 C:\inetpub\vhosts\saptarshiclasses.com\httpdocs\wp-includes\shortcodes.php(228): preg_replace_callback('/\\[(\\[?)(class_...', 'do_shortcode_ta...', '[class_registra...') #4 C:\inetpub\vhosts\saptarshiclasses.com\httpdocs\wp-includes\class-wp-hook.php(303): do_shortcode('[class_registra...') #5 C:\inetpub\vhosts\saptarshiclasses.com\httpdocs\wp-includes\plugin.php(189): WP_Hook->apply_filters('[class_registra...', Array) #6 C:\inetpub\vhosts\saptarshiclasses.com\httpdocs\wp-includes\post-template.php(25 in C:\inetpub\vhosts\saptarshiclasses.com\httpdocs\wp-content\plugins\classregistration\inc\user_registration.php on line 23