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Hello Madhukar!  It's likely that Zopim has blocked some resources (javascript, css, etc.) from crawlers on their URLs (not yours). What you'll want to do to get more granular detail though is do a fetch and render of a specific page with the error then scroll to the bottom of that page where it will list the blocked resources. This discussion on Google's Product Forums outlines the process that a user with a similar issue used to get visibility into it: https://productforums.google.com/forum/#!topic/webmasters/vwQnFkGCNaE The main point form that discussion in relation to your question being, "[when checking] the zopim.com urls, more specifically the us30, they have their own robots.txt file blocking all from the crawlers.  I would assume the remaining zopim.com urls all block crawlers as well." That is most likely what is generating the errors that you see. Cheers!