Hi @thamamur! I looks like you’re omitting the https: from the image URL. If you change the following:
<meta name="twitter:image:src" content="//dentsu-ho.com/og1200_630.png" />
to
<meta name="twitter:image" content="https://dentsu-ho.com/og1200_630.png" />
it should work. Note: twitter:image:src will work, but twitter:image is the new hotness.
A quick note about your og:image content too: Facebook will display this image no problem, but other websites/services e.g. Slack will choke on it and not display the image because of the missing http(s):
<meta property="og:image" content="//dentsu-ho.com/og1200_630.png" />
I’d recommend changing it to:
<meta property="og:image" content="https://dentsu-ho.com/og1200_630.png" />
