Hi, my tweet error and robots.txt file


The source code of the tweet. Images have been rendered from Amazon CloudFront.
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:site" content="@BarnabasFund" />
<meta name="twitter:site:id" content="76057324" />
<meta name="twitter:creator" content="@BarnabasFund" />
<meta name="twitter:url" content="https://barnabasfund.org/en/news/chinese-church-raided-and-looted-by-1000-police-and-government-agents" />
<meta name="twitter:creator:id" content="76057324" />
<meta name="twitter:title" content="Chinese church raided and looted by 1,000 police and government agents" />
<meta name="twitter:description" content="More than 1,000 government agents, including police, forced their way into an unofficial church in Henan province on 14 September and removed items from the building." />
<meta name="twitter:image" content="//d2qg2f5ax3lmge.cloudfront.net/sites/default/files/images/article/china-national-congress-4x3-feature_1.jpg" />
<meta property="article:published_time" content="2018-10-04T11:37:08+00:00" />
Tried to reproduce on staging site, Image working properly on and off. unable to trace root cause.
CMS: Drupal 7.59