An error log is a list of the error messages and warnings that showed up for one reason or another while your visitors were surfing around your website. This sort of a log includes raw information about the way the server has handled requests in various situations. An error message might appear if, for example, a link leads to a webpage or a file that isn't on the server, if the code on a particular page can't be processed, if anyone is trying to access the Internet site or its back office using an IP address that is blocked by an .htaccess rule and many others. The information within the error log offers the IP address of the site visitor, what error message showed up and the cause for the hosting server to show it, the full path to the file which triggered the error and the precise time of the event. Having this information will permit you to find out if any part of your Internet site has an issue, which you could then deal with. Therefore, your website visitors will have a better experience and you will optimize the website for maximum performance.