SetNullLanguage question

[jensgol]

I'm not sure if this is an bug, because my device has only one language.
E1.20 Page 66 bottom says "Set Language Code to 0x0000 to reset device to Default Language."
So SetNullLanguage should not produce an error if we get an ACK?

SetNullLanguage: FAILED
Try to set the language to two null ASCII characters.
SET: uid: 4c53:530f002f, pid: LANGUAGE (0x00b0), sub device: 0, args: ['\x00\x00']
Response: RDMResponse(type=ACK, command_class=SET), PID: 0x00b0, TN: 47, PDL: 0, data: {}
Failed: expected one of:
CC: Set, PID 0x00b0, NACK RDMNack(value=4, desc="Write protect")
CC: Set, PID 0x00b0, NACK RDMNack(value=6, desc="Data out of range")

OLA Version: 0.10.9
Test Run: 2023-03-22 11:49:26 AM
UID: 4c53:530f002f