Comment by Polizeiposaune

eMudhra generated multiple weak private keys and included their public counterpart in multiple intermediate certificates. You need to check that all the intermediates are rejected.

See the lists in https://bugzilla.mozilla.org/show_bug.cgi?id=2083449; I believe that "dv-g3b-" corresponds to the intermediate CA certificate listed as "EM DV TLS CA - G3B"

DV/OV/EV are "Domain Validated", "Organization Validated" and "Extended Validation" which refer to different levels of checking that the CA should done before issuing a certificate with a particular name in it.