Certificate Error

After entering user credentials I am facing some exception in mobile devices.

AuthorizationException: {"type":0,"code":0,"errorDescription":"Hostname companyName.okta.com not verified:\n certificate: sha1\/JLa+3WYUnEWRnbqHc\/gBArYccCk=\n DN: CN=*.okta.com,O=Okta\\, Inc.,L=San Francisco,ST=California,C=US\n subjectAltNames: [*.okta.com, okta.com]"}