An error log is a listing of the error messages and warnings which showed up for one reason or another while your visitors were looking through your Internet site. This type of a log provides raw information on the way the hosting server has dealt with requests a number of situations. An error message may appear if, for example, a link leads to a website or a file that is not on the hosting server, if the code on a specific page can't be processed, if someone is trying to access the Internet site or its back office using an IP address that's blocked by an .htaccess rule and so on. The info inside the error log includes the IP of the website visitor, what error message appeared and the basis for the server to display it, the full path to the file which caused the error and the exact time of the event. Having this info will enable you to figure out if any part of your site has an issue, which you could then fix. Consequently, your website visitors will have a better experience and you'll supercharge the site for best performance.