Broken link is bad for SEO. just install chrome add on and find broken link of website
https://chrome.google.com/webstore/detail/broken-link-checker/nibppfobembgfmejpjaaeocbogeonhch
https://chrome.google.com/webstore/detail/check-my-links/ojkcdipcgfaekbeaelaapakgnjflfglf?hl=en-GB