alueError: not enough values to unpack (expected 2, got 1)

[MxPie200]

Hello,

I have an raspberry pi with two attaches Eaton USV's via USB cable.
Last hour i got following error:

File "/home/max/.local/lib/python3.11/site-packages/nut2.py", line 169, in lis>
Jan 02 18:31:10 raspberrypi-5 python[23740]: var, data = current[offset:].split('"')[:2]
Jan 02 18:31:10 raspberrypi-5 python[23740]: ^^^^^^^^^
Jan 02 18:31:10 raspberrypi-5 python[23740]: ValueError: not enough values to unpack (expected 2, got 1)

What does this mean?
Is there any fix available?