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ActiveRecord::RecordInvalid:Validation failed: Account has already been taken

Posted at

###エラーの内容
既にAccountというデータがあるから、ダメだよ。バリデーションで問題が起きてますよという内容

###解決策

rake db:migrate:reset

これでテーブルの内容の削除とshemaからの再作成ができるので解消できました。

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