code: def com_google_fonts_check_fontdata_namecheck(ttFont, familyname):
    
    FB_ISSUE_TRACKER = "https://github.com/googlefonts/fontbakery/issues"
    import requests
    url = f"http://namecheck.fontdata.com/?q={familyname}"
    try:
      response = requests.get(url, timeout=10)
      data = response.content.decode("utf-8")
      if "fonts by that exact name" in data:
        yield INFO, ("The family name '{}' seem to be already in use.\n"
                     "Please visit {} for more info.").format(familyname, url)
      else:
        yield PASS, "Font familyname seems to be unique."
    except:
      yield ERROR, ("Failed to access: '{}'.\n"
                    "Please report this issue at:\n{}").format(url,
                                                               FB_ISSUE_TRACKER)
docs: Familyname must be unique according to namecheck.fontdata.com