Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "_return_false" not found or invalid function name in /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/class-wp-hook.php:324 Stack trace: #0 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/plugin.php(205): WP_Hook->apply_filters() #1 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/rest-api/class-wp-rest-server.php(310): apply_filters() #2 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/rest-api.php(428): WP_REST_Server->serve_request() #3 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/class-wp-hook.php(324): rest_api_loaded() #4 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #5 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/plugin.php(565): WP_Hook->do_action() #6 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/class-wp.php(418): do_action_ref_array() #7 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/class-wp.php(813): WP->parse_request() #8 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/functions.php(1336): WP->main() #9 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-blog-header.php(16): wp() #10 /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/index.php(17): require('/homepages/18/d...') #11 {main} thrown in /homepages/18/d879839313/htdocs/clickandbuilds/dataInsightsOld/wp-includes/class-wp-hook.php on line 324