Fix WP All Import Problem

bb-wp-all-import.php

<?php
/**
 * Add the code to All Import > Settings > Function Editor.
 */
function clear_bb_cache_after_wpai_import($import_id) {
  FLBuilderModel::delete_asset_cache_for_all_posts();
}

add_action( 'pmxi_after_xml_import', 'clear_bb_cache_after_wpai_import', 10, 1);