fatal error when using wp_list_table in wordpress

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I’m in fighting with a fatal error when using wp_list_table in a class , in totally i extend the wordpress wp_list_table in a class and then include it into my plugin when i try to instance an object from it , and call the .display() function it says:

Fatal error: Call to undefined function get_current_screen() in
/Applications/MAMP/htdocs/wordpress_33/wp-admin/includes/class-wp-list-table.php
on line 87

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any suggestion please?

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2 comments

  1. I found I had to explicitly include the ‘wp-admin/includes/screen.php’ script

    <?php

if(!class_exists('WP_List_Table')){
    require_once( ABSPATH . 'wp-admin/includes/screen.php' );
    require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}

/**
 * Handle the admin tasks for the BHAA companies
 * @author assure
 *
 */
class MyTable extends WP_List_Table