google Sitemap error Network unreachable: robots.txt unreach

[migors]

Hi, just instaled Xmap and tried to add in google webmaster tool. i god that eror:

Sitemap errors and warnings
Line Status Details
Details - Network unreachable: robots.txt unreachable
We were unable to crawl your Sitemap because we found a robots.txt file at the root of your site but were unable to download it. Please ensure that it is accessible or remove it completely.

i checked robots.txt and it is readable. Could anybody suggest me, what to do?
my website is domalaukums.lv

[guilleva]

Hi, this error is not a bug and is not related to Xmap. For some reason Google cannot read your robots.txt. Try resubmitting your sitemap to see if Google can read it this time, also, check if there is any rule blocking it in your .htaccess file of something like that.