An error log is a list of the error messages and warnings which displayed for one reason or another while your visitors were browsing your site. This type of a log includes raw information about the way the server has dealt with requests a number of situations. An error message could appear if, for instance, a link leads to a website or a file that's not on the server, if the code on a specific page can't be processed, if any individual is trying to access the Internet site or its back office through an IP address that is blocked by an .htaccess rule and so on. The info in the error log includes the IP of the visitor, what error message displayed and the basis for the hosting server to display it, the full path to the file that triggered the error and the specific time of the event. Having this data will permit you to learn if any part of your site has a problem, which you may then deal with. As a result, your site visitors will have a better experience and you will boost the Internet site for optimum performance.