Adding Avatar Shortcode to WPBakery Page Builder Grid Builder

functions.php

<?php 
add_filter( 'vc_grid_item_shortcodes', 'my_module_add_grid_shortcodes' );
function my_module_add_grid_shortcodes( $shortcodes ) {
 $shortcodes['vc_avatarino'] = array(
 'name' => __( 'Avatar', 'mrcatdev' ),
 'base' => 'vc_avatarino',
 'category' => __( 'Content', 'mrcatdev' ),
 'description' => __( 'Avatar', 'mrcatdev' ),
 'post_type' => Vc_Grid_Item_Editor::postType(),
  );
 return $shortcodes;
}
 
add_shortcode( 'vc_avatarino', 'vc_avatarino_func' );
function vc_avatarino_func() {
    return '{{avatarino}}';
}


add_filter( 'vc_gitem_template_attribute_avatarino','vc_gitem_template_attribute_avatarino', 10, 2 );
function vc_gitem_template_attribute_avatarino( $value, $data ) {
   extract( array_merge( array(
      'post' => null,
      'data' => '',
   ), $data ) );
  $atts_extended = array();
  parse_str( $data, $atts_extended );
  $atts = $atts_extended['atts'];
  // write all your widget code in here using queries etc

	$user =$post->author;
 	$avatar =get_avatar(get_the_author_meta('ID',$user),96); 	

	$author_name = get_the_author_meta('nickname',$user);

	$out = '<div class="post-details"><span class="grid-avatar">'.$avatar.'</span><span class="grid-details"><span class="author">'.$author_name.'</span><span class="post-date">'.$post->post_date.'</span></span></div>'; 
	
  return $out;
}