Hello I am facing serious issue in my google webmaster tool i.e. Error in Robots.txt Fetch & Server Connectivity in google webmaster. Google couldn't crawl your site because we were unable to access your site's robots.txt file. Please tell me how can i fix this error please guide me.
First you have to validate your website's robots.txt file through Robots.txt validator; secondly allow search engines through robots.txt in order to index your site.