title: How can I fix the Lighthouse returned error: NOT_HTML. The page provided is not HTML (served as MIME type ) error for square/weebly website?
body: <p>I am trying to use PageSpeed Insights in Google Search Console for Weebly/Square website and getting an error:</p>
  <p>Lighthouse returned error: NOT_HTML. The page provided is not HTML (served as MIME type )</p>
  <p>It worked for me at the beginning (I tested 2-3 times). I resized some images and tried again. Getting this error since then.</p>
  <p>Square's support states it's not on their side.</p>