Fatal error: Uncaught Error: Undefined constant "LC_MESSAGES" in C:\xampp\htdocs\lanuser\PHP\include\common.php:14 Stack trace: #0 C:\xampp\htdocs\lanuser\PHP\index.php(21): require_once() #1 {main} thrown in C:\xampp\htdocs\lanuser\PHP\include\common.php on line 14