Lightwave sort of broken

Multiple reports in the logs of the lightwave broker failing…

2024-01-07 12:20:00.209 ERROR (Thread-5 (_send_queue)) [lightwave.lightwave] LW broker fail!
2024-01-07 12:20:40.990 ERROR (Thread-6 (_send_queue)) [lightwave.lightwave] LW broker fail!
2024-01-07 12:20:55.998 ERROR (Thread-6 (_send_queue)) [lightwave.lightwave] LW broker fail!
2024-01-07 12:21:11.008 ERROR (Thread-6 (_send_queue)) [lightwave.lightwave] LW broker fail!
2024-01-07 12:21:26.032 ERROR (Thread-6 (_send_queue)) [lightwave.lightwave] LW broker fail!
2024-01-07 12:21:41.050 ERROR (Thread-6 (_send_queue)) [lightwave.lightwave] LW broker fail!
2024-01-07 12:21:56.078 ERROR (Thread-6 (_send_queue)) [lightwave.lightwave] LW broker

It might eventually work (after a minute or 5) but might not. So it’s registered, but not reliable. Any ideas how to fix/troubleshoot?

LW version 1 switches and I think original hub.

config.yaml for the lw stuff is:

#Lightwave integration
lightwave:
host: 192.168.XX.YY
lights:
R1D1:
name: kitchen lights 1
R1D2:
name: kitchen lights 2
R1D3:
name: kitchen lights 3
R1D4:
name: kitchen lights 4
R1D5:
name: spots
R2D1:
name: d1 near
R2D2:
name: d3 near
R2D3:
name: d4 near
R2D4:
name: d1 far
R2D5:
name: d2 far
R2D6:
name: d3 far
R2D7:
name: d4 far
R2D8:
name: table
R2D9:
name: sidelights
R2D10:
name: brick wall
R2D13:
name: d2 near
R3D1:
name: music ceiling
R4D1:
name: rear lights
R5D1:
name: hall lights
R5D2:
name: front lights
switches:
R2D11:
name: left socket
R2D12:
name: right socket

(yaml file does have neater spacing)

anyone able to help?