Hello Guys. I'm just opened a blog, and it gets around 200 pageviews daily. Its on a wordpress platform, and self hosted. But lately, ive been getting this error:

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at ######## to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

I learnt that i have to fix my code to close connections that are left open and not being used. Wher do i place the code? How do i do it? Please id appreciate detailed answers. Im on a shared hosting server and im using cpanel