RHV: ovirt-ha-broker service show error message "No space left on device".

Issue

• ovirt-ha-broker service shows error message "No JSON object could be decoded" and "OSError: [Errno 28] No space left on device."

# systemctl status ovirt-ha-broker
 ovirt-ha-broker.service - oVirt Hosted Engine High Availability Communications Broker
   Loaded: loaded (/usr/lib/systemd/system/ovirt-ha-broker.service;  enabled; vendor preset: disavled)
   Active: active (running) since Sat xxx-xx-xx ISt; 1 months 13 days ago
Main PID: 36911 (ovirt-ha-broker)
    Tasks: 11
  Memory: 62.1M

hostname ovirt-ha-boker[36911]: ovirt-ha-broker mgmt_bridge.MgmtGridge ERROR Command Host.getCapabiltites with args {} failed:
       (code=3260, message=Internal JSON-RPC error: {'reason': 'No JSON object could be decoded'})
hostname ovirt-ha-boker[36911]: ovirt-ha-broker mgmt_bridge.MgmtGridge ERROR Command Host.getCapabiltites with args {} failed:
        (code=3260, message=Internal JSON-RPC error: {'reason': '[Errno 28] No space left on device'})