getting "Internal Server Error" only on http://[SERVER-IP/

recently i'm facing "Internal Server Error" while running PHP on http://[SERVER-IP/ with no reason but all domains is still working.
i checked everything like "Fix Primissions" but nothing has changed
please help me how to fix this?

problem was solved by adding this code into /usr/local/apache/conf.d/vhosts.conf file

Code: [Select]

<Directory "/usr/local/apache/htdocs">
    AllowOverride All
    suPHP_UserGroup nobody nobody
</Directory>