启动oopenvswitch失败，
[root@k8s-master ~]# systemctl status openvswitch
● openvswitch.service - Open vSwitch
Loaded: loaded (/usr/lib/systemd/system/openvswitch.service; disabled; vendor preset: disabled)
Active: active (exited) since Fri 2022-07-29 12:43:59 CST; 2min 44s ago
Process: 112539 ExecStop=/bin/true (code=exited, status=0/SUCCESS)
Process: 112742 ExecStart=/bin/true (code=exited, status=0/SUCCESS)
Main PID: 112742 (code=exited, status=0/SUCCESS)
Tasks: 0
CGroup: /system.slice/openvswitch.service
Jul 29 12:43:58 k8s-master systemd[1]: Starting Open vSwitch...
Jul 29 12:43:59 k8s-master systemd[1]: Started Open vSwitch.
查看日志发现有两处ERROR，请问怎么解决：
2022-07-29 12:43:56.854 72435 INFO neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [-] SIGTERM received, capping RPC timeout by 10 seconds.
2022-07-29 12:43:57.065 72435 INFO neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-bb3ef095-73d9-4797-a60c-ee2981ab7a01 - - - - -] Agent caught SIGTERM, quitting daemon loop.
2022-07-29 12:43:57.103 72435 ERROR neutron.agent.linux.async_process [-] Error received from [ovsdb-client monitor tcp:127.0.0.1:6640 Bridge name --format=json]: None
2022-07-29 12:43:57.160 72435 ERROR neutron.agent.linux.async_process [-] Error received from [ovsdb-client monitor tcp:127.0.0.1:6640 Interface name,ofport,external_ids --format=json]: None
2022-07-29 12:44:03.293 112750 INFO neutron.common.config [-] Logging enabled!
2022-07-29 12:44:03.315 112750 INFO neutron.common.config [-] /usr/bin/neutron-openvswitch-agent version 13.0.7