Edit file File name : class-post.php Content :<?php namespace QuadLayers\QLWAPP\Api\Rest\Admin_Menu\Box; use QuadLayers\QLWAPP\Api\Rest\Admin_Menu\Base; use QuadLayers\QLWAPP\Models\Box as Models_Box; class Post extends Base { protected static $route_path = 'box'; public function callback( \WP_REST_Request $request ) { try { $body = json_decode( $request->get_body(), true ); $models_box = Models_Box::instance(); $status = $models_box->save( $body ); return $this->handle_response( $status ); } catch ( \Throwable $error ) { $response = array( 'code' => $error->getCode(), 'message' => $error->getMessage(), ); return $this->handle_response( $response ); } } public static function get_rest_method() { return \WP_REST_Server::CREATABLE; } public static function get_rest_args() { return array(); } } Save