title: ARC welder for chrome is not launching properly
body: <p>I am using chrome developer version 63.0.3239.70. I just added ARC Welder from chrome web store. On launching its showing following screen. (blank)</p>
  
  <p><a href="https://i.stack.imgur.com/TsWsi.png" rel="nofollow noreferrer">ARC Image </a></p>