POOL_APP_NOT_ENABLED

I am getting this warning on ceph,
[WRN] POOL_APP_NOT_ENABLED: 1 pool(s) do not have an application enabled

how can i solve it?

geoint@MAAS-01:~$ juju ssh ceph-mon/leader sudo ceph health detail
HEALTH_WARN mons are allowing insecure global_id reclaim; There are daemons running an older version of ceph; 1 pool(s) do not have an application enabled
[WRN] AUTH_INSECURE_GLOBAL_ID_RECLAIM_ALLOWED: mons are allowing insecure global_id reclaim
    mon.juju-5025f7-0-lxd-0 has auth_allow_insecure_global_id_reclaim set to true
    mon.juju-5025f7-1-lxd-0 has auth_allow_insecure_global_id_reclaim set to true
    mon.juju-5025f7-2-lxd-0 has auth_allow_insecure_global_id_reclaim set to true
[WRN] DAEMON_OLD_VERSION: There are daemons running an older version of ceph
    mon.juju-5025f7-0-lxd-0 mon.juju-5025f7-1-lxd-0 mon.juju-5025f7-2-lxd-0 osd.0 osd.1 osd.3 osd.4 osd.5 osd.7 osd.8 mgr.juju-5025f7-0-lxd-0 mgr.juju-5025f7-1-lxd-0 mgr.juju-5025f7-2-lxd-0 are running an older version of ceph: 16.2.6
[WRN] POOL_APP_NOT_ENABLED: 1 pool(s) do not have an application enabled
    application not enabled on pool 'testbench'
    use 'ceph osd pool application en