Strange error: IPMI KCS

Folks - This is the first time I've seen this error on the log

Feb 20 16:47:44 freenas ipmi0: KCS: Failed to start write
Feb 20 16:47:49 freenas ipmi0: KCS error: 01

TrueNAS 12.0-U2 with a Supermicro X9DR3-LN4F+

Any ideas?

Thanks!

--- Edit ---
Should have added:
Firmware Revision : 03.48

TrueNAS-12.0-U3.1
Chassis: Supermicro SuperChassis 825TQ-R740LPB 2U 8 x 3.5" Drive Bays
Power Supply: 2 x 740 Watt PWS-741P-1R Power Supply Platinum
Backplane: Supermicro BPN-SAS-825TQ 8-port 2U TQ (W/ AMI 9072)
Motherboard: Supermicro X9DR3-LN4F+
CPU: 2 x Intel Xeon E5-2630 V1 Hex (6) Core 2.3GHz
RAM: 32GB DDR3 ECC (8 x 4GB - DDR3 - REG)
Storage Controller: LSI 9210-8i 6 GB/S
Boot Pool: 2 x Kingston A400 120 GB SSD Mirrored (using motherboard SATA 6 GB/s)
Pool_1: 5 x WD Red 3 TB RAIDZ2 (CIFS and PROD VMware VMs)
Small_n_Slow Pool: 1 x Western Digital Blue WD3200AAKS 320GB and 2 x Seagate Barracuda 7200.10 300 GB (DEV VMware VMs)
3 x Emby media servers (separate subnets) with shared pool content
NFS server for VMware ESXi ~~6.0~~ 7.0 (PROD) and ~~6.5~~ 6.7 (DEV)
CIFS for Windows clients

HP Proliant DL360p Gen8
2 x Xeon E5-2650 2.0Ghz 8-Core CPUs
128 GB of HP SmartMemory (8 x 16GB) PC3-12800R (DDR3-1600) Registered ECC Memory
4 x HP Enterprise 300 GB 6G SAS 15K SFF Hot Plug Hard Drives (RAID-5)
HP Embedded Smart Array P420i/1GB FBWC RAID
VMware ESXi 7.0.0 (Build 16324942)

pfSense 2.4.5-RELEASE-p1 running on a Partaker R11 (Intel i5 2540M, 2GB RAM, 32G SSD, 6 Intel 82583v Interfaces)
Ubiquiti UniFi SW-24 Gen 1 24-port non-PoE Core Switch
Ubiquiti UniFi SW-8-150W 8-port PoE Switch for APs and SW-8s, Flex Mini and APs
Ubiquity UF-MM-1G SFP fibre modules (fibre betwen SW-24 and SW-8-150w - because I can - actually, if frees up an RJ-45 on both switches)
2 x Ubiquiti UniFi SW-8 Gen 1 8-port non-PoE Switches (media room and gaming room)
1 x Ubiquiti UniFi USW Flex Mini 5-port
2 x Ubiquiti UniFi AP-Lite Access Points
1 x Ubiquiti UAP-FlexHD Access Point
D-Link DGS-105 GigE switch for DMZ (unmanaged)

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