Get fatal error when activate

Fatal error: Uncaught Error: Call to undefined function wp_doing_ajax() in /***/public_html/wp/wp-content/plugins/gridable/includes/class-gridable.php:164 Stack trace: #0 /***/public_html/wp/wp-content/plugins/gridable/includes/class-gridable.php(76): Gridable->define_admin_hooks() #1 /***/public_html/wp/wp-content/plugins/gridable/gridable.php(58): Gridable->__construct() #2 /***/public_html/wp/wp-content/plugins/gridable/gridable.php(62): run_gridable() #3 /***/public_html/wp/wp-admin/includes/plugin.php(1943): include(‘/***…’) #4 /***/public_html/wp/wp-admin/plugins.php(164): plugin_sandbox_scrape(‘gridable/gridab…’) #5 {main} thrown in /***/public_html/wp/wp-content/plugins/gridable/includes/class-gridable.php on line 164