Hello everybody yesterday i got email from google wabmaster. The Email was that:-Over the last 24 hours, Googlebot encountered 20 errors while attempting to access your robots.txt. To ensure that we didn't crawl any pages listed in that file, we postponed our crawl. Your site's overall robots.txt error rate is 74.1%. So tell me what i do to sort out that problem fast is that can be serious issue with my site mean there will affect on my site ranking or other loss. share your suggestion thanx .