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 kind of a log provides raw information on the way the hosting server has dealt with requests a number of situations. An error message could appear if, for instance, a link leads to a page or a file that isn't on the hosting server, if the code on a particular page can't be processed, if somebody is trying to access the Internet site or its back office via an IP address that's blocked by an .htaccess rule and so forth. The info inside the error log features the IP address of the site visitor, what error message appeared and the cause for the server to display it, the whole path to the file which generated the error and the specific time of the event. Having this information will help you determine if any part of your Internet site has an issue, that you can then fix. Therefore, your visitors will have a better experience and you may optimize the Internet site for optimum performance.