Sign in using devise login

I using login (username or email) to sign in to application, identical as here https://github.com/plataformatec/devise/wiki/How-To:-Allow-users-to-sign-in-using-their-username-or-email-address

My POST it looks like it:
`curl -XPOST -H "Content-Type: application/json" http://localhost:3000/auth/sign_in -d '{"login": "reporter@domster.pl", "password": "Secret99"}'
`

Application show me this:
`PG::UndefinedColumn: ERROR: column "login" does not exist`

Start at the auth/sign_in endpoint and compare the requested username-or-email login behavior with the linked Devise wiki guide. Reproduce the POST request and trace the reported PG::UndefinedColumn error; done means the request accepts the documented login value without the missing-column error.

Written by the indexing model from the issue text.