All actions of a table are logged in this table

<?php	
	$xcrud2 = Xcrud::get_instance();	
	$xcrud2->table("logs");
	$xcrud2->limit(5);
	$xcrud2->unset_remove();
	$xcrud2->unset_add();
	$xcrud2->unset_edit();
	$xcrud2->order_by('updated','desc');
	echo $xcrud2->render();		
?>

Warning: mysqli_connect(): (HY000/1049): Unknown database 'xcrud1_7_v6' in /var/www/html/xcrud/demo/xcrud-lte/xCrud_1.7.26/xcrud/xcrud_db.php on line 50