An error log is a list of the error messages and warnings that appeared for one reason or another while your visitors were surfing around your site. This sort of a log contains raw info about the way the hosting server has dealt with requests in different situations. An error message could appear if, for example, a link leads to a site or a file that's not on the hosting server, if the code on a specific page can't be processed, if anyone is trying to access the Internet site or its back office via an IP address that is blocked by an .htaccess rule and so on. The info in the error log includes the IP address of the website visitor, what error message showed up and the root cause for the hosting server to show it, the entire path to the file which generated the error and the exact time of the event. Having this information will permit you to find out if any part of your Internet site has a problem, which you may then take care of. Consequently, your site visitors will have a better experience and you will boost the site for best performance.