rformato

I guess it’s a php compatibility issue

in class-ur-ajax-php
it’s better to check if JSON_UNESCAPED_UNICODE exists before using it

      if(defined('JSON_UNESCAPED_UNICODE')) {
        $post_content = wp_json_encode( $post_data, JSON_UNESCAPED_UNICODE );
      } else {
        $post_content = wp_json_encode( $post_data );
      }