Read of Meter 1 block registers failed (device does not support SunSpec?) at /usr/sbin/sunspec-status line 224.

[akamming]

I installed this script on a Raspberry pi 3B+ (Raspbian Buster)

When i give the command
sunspec-status <ip adress of my inverter>
I get this error:
Read of Meter 1 block registers failed (device does not support SunSpec?) at ./sunspec-status line 264.
i found a workaround to make it work: If i i add -m 0 to the command
sunspec-status <ip adress of my inverter> -m 0
i do get correct output
2020-02-04 15:52:53,ON (MPPT),2172,2205,16621708,400.70,9.47,747.30,2.95,32.22,0,0,0,0
The inverter is a SolarEdge SE7K, firmware 3.2251