error migration

gistfile1.txt

Miguels-MacBook-Air:peach_unified sancho$ rake db:migrate:redo
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/associations.rb:1585: warning: already initialized constant Spree::Store::HABTM_Products
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/associations.rb:1585: warning: previous definition of HABTM_Products was here
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/associations.rb:1585: warning: already initialized constant Spree::Product::HABTM_Stores
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/associations.rb:1585: warning: previous definition of HABTM_Stores was here
== 20141006195009 CreateMultipleStores: reverting =============================
== 20141006195009 CreateMultipleStores: reverted (0.0000s) ====================

== 20141006195009 CreateMultipleStores: migrating =============================
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:

undefined method `assign_attributes' for nil:NilClass/Users/sancho/Documents/dev/peach/repo/peach_unified/db/migrate/20141006195009_create_multiple_stores.rb:22:in `up'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:598:in `exec_migration'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:579:in `block (2 levels) in migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:578:in `block in migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:294:in `with_connection'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:577:in `migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:752:in `migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:992:in `block in execute_migration_in_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:1038:in `block in ddl_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `block in transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/connection_adapters/abstract/database_statements.rb:209:in `within_new_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/transactions.rb:208:in `transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:1038:in `ddl_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:991:in `execute_migration_in_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:953:in `block in migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:949:in `each'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:949:in `migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:807:in `up'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:785:in `migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/railties/databases.rake:34:in `block (2 levels) in <top (required)>'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/railties/databases.rake:60:in `block (3 levels) in <top (required)>'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/bin/ruby_executable_hooks:15:in `eval'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/bin/ruby_executable_hooks:15:in `<main>'
NoMethodError: undefined method `assign_attributes' for nil:NilClass
/Users/sancho/Documents/dev/peach/repo/peach_unified/db/migrate/20141006195009_create_multiple_stores.rb:22:in `up'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:598:in `exec_migration'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:579:in `block (2 levels) in migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:578:in `block in migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:294:in `with_connection'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:577:in `migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:752:in `migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:992:in `block in execute_migration_in_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:1038:in `block in ddl_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `block in transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/connection_adapters/abstract/database_statements.rb:209:in `within_new_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/transactions.rb:208:in `transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:1038:in `ddl_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:991:in `execute_migration_in_transaction'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:953:in `block in migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:949:in `each'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:949:in `migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:807:in `up'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/migration.rb:785:in `migrate'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/railties/databases.rake:34:in `block (2 levels) in <top (required)>'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/gems/activerecord-4.1.4/lib/active_record/railties/databases.rake:60:in `block (3 levels) in <top (required)>'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/bin/ruby_executable_hooks:15:in `eval'
/Users/sancho/.rvm/gems/ruby-2.1.2@peach_ecom/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)
Miguels-MacBook-Air:peach_unified sancho$