Hi I'm trying

improvedQueryRaw

and it works localy, but on Vercel it shows

ERROR	Error: error: The preview feature "improvedQueryRaw" is not known

. Is there any case possible for 3.14 cannot recognize this flag?

Could be due to build cache, which helps in speeding up build step. Could you try after deleting/disabling build cache?

Sounds likely, will try it. Thanks!