HTML Issue with Twitter Card

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" content="summary">
    <meta name="twitter:site" content="@RSSeoSolution">
    <meta name="twitter:creator" content="@RSSeoSolution">
    <meta name="twitter:title" content="Seo Link Building Services Solutions - RS SEO Solution">
    <meta name="twitter:description" content="RS Seo Solution provides professional complete seo link building services solutions. Get quality seo service, link building service, niche one-way link building service, manual submission service and other all seo related services.">
    <meta name="twitter:image" content="https://www.rsseosolution.com/assets/img/mockup/1566586317home.jpg">
    <meta property="og:image" content="https://www.rsseosolution.com/assets/img/mockup/1566586317home.jpg">
    <meta property="og:image:type" content="image/JPEG">
    <meta property="og:locale" content="en_US" />
    <meta property="og:title" content="Seo Link Building Services Solutions - RS SEO Solution" />
    <meta property="og:description" content="RS Seo Solution provides professional complete seo link building services solutions. Get quality seo service, link building service, niche one-way link building service, manual submission service and other all seo related services." />
    <meta property="og:url" content="https://www.rsseosolution.com/" />
    <meta property="og:site_name" content="RS Seo Solution" />
    <meta property="article:publisher" content="https://www.facebook.com/RS.Seo.Services.Solution/" />

Code (markup):

You can check live our issue also at https://www.rsseosolution.com/view/what-are-keywords-and-its-importance-in-seo-84 ….. sharing buttons are at end of blog …… all social platforms work perfect but not twitter (Image only, remaining all things are coming perfect).
SEMrush

Please guide me to fix this issue.