BuddyBoss activity top5

function top_activities_24h_widget() {
   register_widget( 'Top_Activities_24h_Widget' );
}
add_action( 'widgets_init', 'top_activities_24h_widget' );

class Top_Activities_24h_Widget extends WP_Widget {
   function __construct() {
       $widget_ops = array( 'classname' => 'top_activities_24h', 'description' => __('Najlepsze na blogu z 24h', 'top_activities_24h') );
       parent::__construct( 'top_activities_24h', __('Top Rated Activities (24h)', 'top_activities_24h'), $widget_ops );
   }
   function widget( $args, $instance ) {
       $title = apply_filters( 'widget_title', $instance['title'] );
       echo $args['before_widget'];
       if ( ! empty( $title ) ) {
           echo $args['before_title'] . $title . $args['after_title'];
       }

       $top_activities_24h = new WP_Query( array(
           'meta_key' => 'rating',
           'orderby' => 'meta_value_num',
           'order' => 'DESC',
           'date_query' => array(
               array(
                   'after' => '24 hours ago'
               )
           ),
           'posts_per_page' => 5
       ) );

       if ( $top_activities_24h->have_posts() ) :
           echo '<ul>';
           while ( $top_activities_24h->have_posts() ) : $top_activities_24h->the_post();
               echo '<li><a href="' . get_permalink() . '">' . get_the_title() . '</a></li>';
           endwhile;
           echo '</ul>';
       endif;

       wp_reset_postdata();

       echo $args['after_widget'];
   }

   function form( $instance ) {
       if ( isset( $instance[ 'title' ] ) ) {
           $title = $instance[ 'title' ];
       }
       else {
           $title = __( 'Top Rated Activities (24h)', 'top_activities_24h' );
       }
   ?>

<p>
   <label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
   <input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>">

       </p>
   <?php
   }

   function update( $new_instance, $old_instance ) {
       $instance = array();
       $instance['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';
       return $instance;
   }
}