Did you change the link structure of your website recently? To be honest I would not remove them but fix the broken links first with redirects first. If you actually removed these pages from your web server then go ahead and put the redirect to the front of your website.
If you actually view the screenshots. It seems you are are using a plugin that creates links to twitter/facebook pages. And that you haven't entered your twitter/facebook data into it.
i re-submitted the site map and all the errors gone. I don't know what happens but at least its fixed now
Sounds like the pages where deleted and after the resubmission they no longer show up. Glad you got it sorted out.
This is a temporary issue with google webmasters which is quite common use some good site map generator this kind of problems will not come