An error log is a listing of the error messages and warnings that displayed for one reason or another while your visitors were browsing your Internet site. This type of a log contains raw info about the way the server has dealt with requests in various situations. An error message may appear if, for example, a link leads to a website or a file that's not on the hosting server, if the code on a certain page cannot be processed, if anyone is trying to access the website or its back office through an IP address that is blocked by an .htaccess rule etc. The info inside the error log features the IP address of the visitor, what error message showed up and the root cause for the web server to show it, the entire path to the file which caused the error and the exact time of the event. Having this information will enable you to find out if any part of your website has an issue, that you can then clear up. For that reason, your website visitors will have a better experience and you will boost the Internet site for maximum performance.