UPDATE:
Google has now accepted 5 pages out of the 7 pages in the site map but I don’t see my homepage indexed with it’s meta tag so something seems to be wrong? (My site is https://containerforsale.co.uk)
I followed the suggestion to write the robots.txt the following way:
User-agent: *
Disallow:
Sitemap: https://containerforsale.co.uk/sitemap.xml
But have since had a reply post on Google webmaster forum suggesting that the above robots.txt file is invalid and may cause Google not to crawl the site. Is this correct? If so how should it be written please?
Thanks for any help.