Failed to list units: Rejected: destination has a full message queue

Issue

• Journal logs on the node are flooded with the below messages.
• The error also appears while ssh access to the node.

Failed to list units: Rejected: destination has a full message queue, 0 matched rules; type="method_call", sender=":1.1321294" (uid=0 pid=1430395 comm="systemctl list-units --state=failed --no-legend " label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023") interface="org.freedesktop.systemd1.Manager" member="ListUnitsByPatterns" error name="(unset)" requested_reply="0" destination="org.freedesktop.systemd1" (uid=0 pid=1 comm="/usr/lib/systemd/systemd --switched-root --system " label="system_u:system_r:init_t:s0")