www.mozilla.org uses an invalid security certificate.

Hi, On Mozilla Firefox, while browsing to https://mozilla.org gives this exception ======================================================= Your connection is not secure The owner of www.mozilla.org has configured their web site improperly. To protect your information from being stolen, Firefox has not connected to this web site. This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. As a result, it is not possible to add an exception for this certificate. www.mozilla.org uses an invalid security certificate. The certificate is not trusted because it is self-signed. The certificate is not valid for the name www.mozilla.org. The certificate expired on Wednesday, June 23, 2021 4:44 PM. The current time is Wednesday, June 30, 2021 10:26 AM. Error code: SEC_ERROR_UNKNOWN_ISSUER ===================================================== While on browsing on Nightly, https://mozilla.org gives following certificate exception ===================================================== www.mozilla.org uses an invalid security certificate. The certificate is not trusted because it is self-signed. Error code: MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT