"SHOW TAG VALUES" returns empty output

Hi Everyone,

I am completely new to the time-series database. Need some help

influxdb version = 1.6.4
index-version = “inmem”

cmd > SHOW TAG VALUES FROM “cprice” WITH KEY = “api”
>
getting an empty output while running this above queirs

There are any configuration changes that need to be done to get an output

Best regards,
Narasimha