Thank you Andy . But, the problem is MOZ crawler was unable to crawl the website even though the line " Allow: / " was present in the robots.txt.
User-agent: *
Allow: /
Disallow: /wp-admin/
Disallow: /wp-includes/
Disallow: /?color=
Disallow: /?manufacturer=
Disallow: /?filter_material-fabric=
Disallow: /?filter_color=
Disallow: /?query_type_color=
Disallow: /?filter_size=
Disallow: /?taxonomy=
Disallow: /?view_mode=
Disallow: /?query_type_material-fabric=
Disallow: /?orderby=
Disallow: /?source_id=
Disallow: /?source_tax=
Disallow: /?shop-2__trashed?
Allow: /wp-admin/admin-ajax.php
Sitemap: https://www.khadination.shop/sitemap.xml
this was the previous version of robots.txt that were been used ....