Voice box prefixes issue

Hi Team,

I am trying to use Voice Box on some sample data and I tried some basic prompts but I noticed the queries generated by Voice Box is creating wrong prefixes starting with ns1:PropertyName.

I did added all the required namespaces in the data but still I do not see correct prefixes in resulted query.

Am I missing any configuration.

I noticed Stardog Voicebox Developer Guide | Stardog Documentation Latest but it doesn't say how to resolve this issue.