HTML Issue with Twitter Card – What We are Missing

Hi,

i added to our website code of open graph and twitter …… so if we share to social media then pictures, title, description etc are coming properly in Facebook, Linkedin but On twitter image is missing …. While image URL in code id perfect.

If i am using any tools like buffer then images are coming properly and sharing also to properly to twitter but when i am sharing from website then twitter is not showing image.

Code are as below

<meta name="twitter:card"...
Code (markup):

HTML Issue with Twitter Card – What We are Missing