Option -g is failing

./check_ilo2_health.pl -u username -p password -n -H 10.0.1.2 -t 60 -g

This failing with the error:
ILO2_HEALTH UNKNOWN – ERROR: Syntax error: Line #0: syntax error near “” in the line: “”.

But withour -g i get:
ILO2_HEALTH OK – (Board-Version: ILO2)