Fatal error: Uncaught Error: Call to undefined function Smush\Core\register_rest_field() in /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-content/plugins/wp-smushit/core/class-rest.php:43 Stack trace: #0 /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-includes/plugin.php(525): Smush\Core\Rest->register_smush_meta(Object(WP_REST_Server)) #1 /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-includes/rest-api.php(294): do_action('rest_api_init', Object(WP_REST_Server)) #2 /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-includes/rest-api.php(144): rest_get_server() #3 /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-includes/plugin.php(601): rest_api_loaded(Object(WP)) #4 /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-includes/class-wp.php(387): do_action_ref_array('parse_request', Array) #5 /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-includes/class-wp.php(726): WP->parse_request('') #6 /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-includes/functions.php(952): WP->main('') #7 /home/drcap/xn--80aea3abvdbckgu.xn-- in /home/drcap/xn--80aea3abvdbckgu.xn--p1ai/docs/wp-content/plugins/wp-smushit/core/class-rest.php on line 43