trouble_tickets#index (ActionView::Template::Error) "missing attribute: confirmed_sms_at"

An ActionView::Template::Error occurred in trouble_tickets#index:

 missing attribute: confirmed_sms_at
 app/models/person.rb:310:in `sms_confirmation?'


-------------------------------
Request:
-------------------------------

 * URL        : https://bikelink.org/trouble_tickets
 * HTTP Method: GET
 * IP address : 174.21.163.6
 * Parameters : {"controller"=>"trouble_tickets", "action"=>"index"}
 * Timestamp  : 2022-09-21 23:09:45 UTC
 * Server : www-6.internal.bikelink.org
   * Rails root : /var/www/bikelink
 * Process: 15941

-------------------------------
Session:
-------------------------------

 * session id: [FILTERED]
 * data: {"session_id"=>"9bcae1c44e02b5f6600895b62d885b32",
  "warden.user.person.key"=>[[50587], "n3ZqnfysSnJmUXXMBU5v"],
  "_csrf_token"=>"Src28e5rZrnA2GamgMkSRlOgomGRl6PEWn065gQToUk=",
  "params_for_filter"=>
   {:filter_by_location=>nil,
    :filter_by_owner=>nil,
    :filter_by_state=>2,
    :filter_by_priority=>nil}}

-------------------------------
Backtrace:
-------------------------------

 app/models/person.rb:310:in `sms_confirmation?'
 app/models/person.rb:226:in `person_confirmed?'
 app/controllers/application_controller.rb:101:in `is_admin?'
 app/views/layouts/_current_user.html.erb:1
 app/views/layouts/application.html.erb:42
 app/controllers/application_controller.rb:47:in `process_action'
Reload