Warnings during ambari-agent, ambari-server upgrade

ambari-agent-2.7.0.0-876.x86_64.rpm                                                                                                                        |  36 MB  00:00:05
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Updating   : ambari-agent-2.7.0.0-876.x86_64                                                                                                                                1/2
Upgrading configs in /etc/ambari-agent/conf/ambari-agent.ini
Values will be updated from /etc/ambari-agent/conf/ambari-agent.ini.old except the following list: [('heartbeat', 'dirs'), ('heartbeat', 'state_interval')], ['stack', 'puppet', 'command', 'python']
  Cleanup    : ambari-agent-2.6.2.0-155.x86_64                                                                                                                                2/2
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.5/services/KAFKA/kerberos.json: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.5/services/KAFKA/configuration/ranger-kafka-audit.xml: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.2/services/LOGSEARCH/role_command_order.json: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.1/services/SMARTSENSE/package/files/view/smartsense-ambari-view-1.4.5.2.6.2.0-155.jar: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.0.6/widgets.json: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.0.6/services/AMBARI_INFRA/role_command_order.json: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.0.6/services/AMBARI_INFRA/metainfo.xml: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.0.6/services/AMBARI_INFRA: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.0.6/kerberos.json: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-START/templates/topology_mappings.data.j2: remove failed: No such file or directory
warning: file /var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-START/templates/include_hosts_list.j2: remove failed: No such file or directory