I get the installation error

[siripravi]

I got the error initially with 'server.php'. Is the file missing?
I got the error resolved by creating one for myself keeping database connection info inside it.
Then I got the error:
Warning: include_once(define.php): Failed to open stream: No such file or directory in C:\graphp\config\dbconnection.php on line 9

Warning: include_once(): Failed opening 'define.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\graphp\config\dbconnection.php on line 9

Fatal error: Uncaught Error: Undefined constant "SITE_PATH" in C:\graphp\config\dbconnection.php:18 Stack trace: #0 C:\graphp\elements\view.php(6): require_once() #1 C:\graphp\index.php(14): require_once('C:\graphp\eleme...') #2 {main} thrown in C:\graphp\config\dbconnection.php on line 18