OpenStack load balancer tab error logs

[Roman]

I use OpenStack-Ansible ussuri 21.2.0 on Ubuntu 18.04
In general, everything works fine, but when I open the load balancer tab in the logs, I get hundreds of such messages:

cmdline: "/usr/sbin/apache2 -k start"
comm: "apache2"
exe: "/usr/sbin/apache2"
hostname: "controller02-horizon-container-88ab4f9b"
machine_id: "7c17a649d417449e8fa9fd0656cd5fbe"
message: "[wsgi:error] [pid 6121:tid 140606055552768] [remote 172.29.236.233:57820] len(inspect.getargspec(type_).args) > 1)"
priority: "3"
selinux_context: "lxc-openstack (enforce)"
syslog_facility: "3"
syslog_identifier: "apache2"
systemd_cgroup: "/system.slice/apache2.service"
systemd_slice: "system.slice"
systemd_unit: "apache2.service"
transport: "syslog"

AND

cmdline: "/usr/sbin/apache2 -k start"
comm: "apache2"
exe: "/usr/sbin/apache2"
hostname: "controller02-horizon-container-88ab4f9b"
message: "[wsgi:error] [pid 6120:tid 140606055552768] [remote 172.29.236.233:57922] /openstack/venvs/horizon-21.2.0/lib/python3.6/site-packages/openstack/resource.py:351: DeprecationWarning: inspect.getargspec() is deprecated since Python 3.0, use inspect.signature() or inspect.getfullargspec()"
priority: "3"
selinux_context: "lxc-openstack (enforce)"
syslog_facility: "3"
syslog_identifier: "apache2"
systemd_cgroup: "/system.slice/apache2.service"
systemd_slice: "system.slice"
systemd_unit: "apache2.service"
transport: "syslog"

There are no problems with the load balancer or dashboard

[Akihiro Motoki (amotoki)]

Horizon project does not provide "the load balancer tab". It is from octavia-dashboard.
Please file a bug to the octavia-dashboard bug tracker.