Rails "destroy" method doesn't work after where quoery

Hello I have this function in my controller

  def destroy
    fallower = Fallower.where(user_id: 1, author_id: 2).first
    fallower.destroy

    respond_to do |format|
      format.js
    end
  end

it throws me this error

ActiveRecord::StatementInvalid in FallowersController#destroy

PG::SyntaxError: ERROR:  zero-length delimited identifier at or near """"
LINE 1: DELETE FROM "fallowers" WHERE "fallowers"."" = $

any idea why normal destroy function doens't work this time?