##エラーメッセージ
rake aborted! StandardError: An error has occurred, this and all later migrations canceled: SQLite3::SQLException: duplicate column name: group_id: ALTER TABLE "favorites" ADD "group_id" integer /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:91:in `initialize' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:91:in `new' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:91:in `prepare' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:137:in `execute' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/connection_adapters/sqlite3_adapter.rb:317:in `block in execute' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/connection_adapters/abstract_adapter.rb:484:in `block in log' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activesupport-4.2.7/lib/active_support/notifications/instrumenter.rb:20:in `instrument' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/connection_adapters/abstract_adapter.rb:478:in `log' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/connection_adapters/sqlite3_adapter.rb:317:in `execute' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/connection_adapters/abstract/schema_statements.rb:407:in `add_column' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/connection_adapters/sqlite3_adapter.rb:443:in `add_column' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/connection_adapters/abstract/schema_statements.rb:677:in `add_reference' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/migration.rb:665:in `block in method_missing' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/migration.rb:634:in `block in say_with_time' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/migration.rb:634:in `say_with_time' /Users/nishidaryu/RubymineProjects/share-tan/vendor/bundl/ruby/2.3.0/gems/activerecord-4.2.7/lib/active_record/migration.rb:654:in `method_missing' /Users/nishidaryu/RubymineProjects/share-tan/db/migrate/20170104032509_add_group_to_favorites.rb:3:in `change'
##試したこと
rake db:reset Run `rake db:migrate` to update your database then try again.
回答よろしくお願いします
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