search functionality is not working in production portal

Hello Team,

We have a search field in the masthead in enterprise portal, it provides auto suggestion.

This functionality is working in development and quality server but not production server.

we are using standard one.(AFP Masthead)

Any idea please?

please find screenshots.

in Quality:

Image may be NSFW.
Clik here to view.

in Production:

Image may be NSFW.
Clik here to view.

Thanks,

Preethi