Started POST "/api/v1/orders/1223/order_changes/196/confirm" for 127.0.0.1 at 2017-02-16 11:16:52 +0300
Processing by Api::V1::OrderChangesController#confirm as JSON
  Parameters: {"order_id"=>"1223", "id"=>"196", "order_change"=>{}}
  User Load (1.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1  [["id", 925]]
  Order Load (1.8ms)  SELECT  "orders".* FROM "orders" WHERE "orders"."id" = $1  ORDER BY "orders"."id" DESC LIMIT 1  [["id", 1223]]
  User Load (0.7ms)  SELECT "users".* FROM "users" WHERE "users"."id" IN (925)
  CACHE (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."id" IN (925)
  Payment Load (0.5ms)  SELECT "payments".* FROM "payments" WHERE "payments"."order_id" IN (1223)
  OrderChange Load (0.3ms)  SELECT  "order_changes".* FROM "order_changes" WHERE "order_changes"."order_id" = $1 AND "order_changes"."id" = $2 LIMIT 1  [["order_id", 1223], ["id", 196]]
  OrderChangeTransition Load (83.0ms)  SELECT  "transitions".* FROM "transitions" WHERE "transitions"."type" IN ('OrderChangeTransition') AND "transitions"."order_change_id" = $1  ORDER BY "transitions"."sort_key" DESC LIMIT 1  [["order_change_id", 196]]
Completed 500 Internal Server Error in 128ms (ActiveRecord: 87.6ms)

Statesman::GuardFailedError (Guard on transition from: '' to '["confirmed"]' returned false):
  app/models/order_change.rb:119:in `transition_to!'
  app/controllers/api/v1/order_changes_controller.rb:51:in `confirm'
  app/middleware/cors_by_referal.rb:8:in `call'