Avoid sign-in after confirmation link click using devise gem?

Avoid sign-in after confirmation link click using devise gem?

I am using devise gem, after clicking on the confirmation link, I want to
directly sign-in. At present it is asking to sign-in again.
Recently I have added in devise initialize file
config.allow_insecure_token_lookup = true config.secret_key =
'a8d814803c0bcc735ce657adc77793459d00154cdd7532c13d3489600dc4e963f86e14beb593a32cbe9dbbe9197c9ce50a30102f363d90350052dc8d69930033'
Any suggestions?