Please check in below configuration file that the property hadoop.user.keytab.file is present with correct keytab file location.
<description>hadoop user keytab file</description>
After that try kinit command on that keytab file and make sure we are able to login as hdfs user.
kinit -kt /etc/krb5.keytab hdfs
If we are still getting errors, I can troubleshoot to live to resolve this faster.