[hosting] php cpanel serwer apache - nie wyświetla plików php

Internal Server Error 
The server encountered an internal error or misconfiguration and was 
unable to complete your request. 
Please contact the server administrator, [adres e-mail] and inform 
them of the time the error occurred, and anything you might have done 
that may have caused the error. 
More information about this error may be available in the server error 
log. 
Additionally, a 404 Not Found error was encountered while trying to 
use an ErrorDocument to handle the request. 
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Apache/1.3.41 Server at netiz.pl Port 80