A: 

This means your web server has crashed. Barring bad hardware, this is a bug inside either the Apache server or a module you have loaded (such as mod_php).

Try upgrading to a newer version, if one is available. If that fails, open a bug report with the Apache maintainers.

Borealid
I am wondering if it is something in my code, I have a script that resizes large images then updates a database then copies the image to S3. if there is a lot of images could it be a problem with my script for example memory issues? I am running the process again on a new instance of the EC2 server and have enabled cloudwatch to check on things. I am currently on my 3rd attempt, the second time the same problem occurred.
undefined
@undefined: regardless of what the client is doing, it should not be able to crash the web server. This is a bug.
Borealid