Warning: Use of undefined constant MESSAGE_DATABASE_ERROR - assumed 'MESSAGE_DATABASE_ERROR' (this will throw an Error in a future version of PHP) in /home/4lib/public_html/classes/db.php on line 13

Fatal error: Uncaught Error: Call to a member function query() on null in /home/4lib/public_html/classes/get.php:827 Stack trace: #0 /home/4lib/public_html/header.php(9): get->getSettings() #1 /home/4lib/public_html/book.php(4): include('/home/4lib/publ...') #2 {main} thrown in /home/4lib/public_html/classes/get.php on line 827