Hi @bloggingindian and @dhruvjha
Please confirm the following:
1. Are all your non-Yoast plugins and themes also updated?
2. Can you confirm you are using the most recent Yoast SEO Premium, v9.4.1? If you update, does the issue resolve? This guide explains more about how to update: https://kb.yoast.com/kb/how-can-i-update-my-free-plugin/
3. Can you confirm you are using WordPress 5.0.3? You can check by clicking on the W in the top left and selecting About. If you need to update, please check with your host provider.?Please know that if you are using an older version of WordPress Core you may experience unexpected behavior with Yoast.?This guide explains more:?https://yoast.com/why-we-dont-support-old-wordpress-versions/.
4. Can you confirm you add the right variation of your site? It needs be exactly what is shown in the browser. That includes any https and www you may have. If you have NOT added the right variation of your site use this guide: https://yoast.com/wordpress/plugins/seo/add-website-google-search-console/
5. Can you confirm you have added the right sitemap? It needs to be sitemap_index.xml. This guide explains more: https://kb.yoast.com/kb/submit-sitemap-search-engines/#google
6. Finally, does clearing your caching from your theme, plugin, server, CDN like CloudFlare or browser and resubmitting your sitemaps resolve the issue? If you are not sure how to clear caching from theme/plugin please speak to those authors. If you want to clear cache from the server, please speak to your host provider. To clear the cache from a browser use this guide: https://kb.yoast.com/kb/how-to-clear-my-browsers-cache/.
To resubmit sitemaps use this guide: https://support.google.com/webmasters/answer/6065812?hl=en