random "api error (status = 400: client error (SendRequest))" pop-ups!

[jt_telrite]

I have 3 new installs of PVE 8.4.14 in one cluster, a PDM 1.0.1 VM in that cluster and another 3 installs of PVE 8.4.1 in a second cluster , and a bare metal PBS v3.3.6
as I navigate around , I occasionally get the error... api error (status = 400: client error (SendRequest)) but in the end everything loads and seems to work.

 

[Bob.Dig]

Get this too all the time, just two PVEs, no cluster.

 

[Bob.Dig]

Logs says this but doesn't make sense to me. Connection is over WireGuard.

Dec 28 10:36:52 datacenter-manager proxmox-datacenter-api[187]: marking client 10.3.9.50 as unreachable
Dec 28 10:36:52 datacenter-manager proxmox-datacenter-api[187]: skipping host 10.3.9.50 - marked unreachable
Dec 28 10:36:52 datacenter-manager proxmox-datacenter-api[187]: client error on request /api2/extjs/cluster/resources, giving up - client error (SendRequest)

Caused by:
    connection closed before message completed
Dec 28 10:37:36 datacenter-manager proxmox-datacenter-api[187]: marking client 10.3.9.50 as unreachable
Dec 28 10:37:36 datacenter-manager proxmox-datacenter-api[187]: skipping host 10.3.9.50 - marked unreachable
Dec 28 10:37:36 datacenter-manager proxmox-datacenter-api[187]: client error on request /api2/extjs/cluster/resources, giving up - client error (SendRequest)

Caused by:
    connection closed before message completed

10.3.9.50 is the remote PVE, PDM is running as a LXC on the local PVE, where there is no connection problem.