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rails db:migrateでエラー

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rails db:migrateを行った後のエラー

rails aborted!
StandardError: An error has occurred, this and all later migrations canceled:
.
.
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原因

`rais db:migrate`の前に行ったコマンドで何か手違いが起きている?たぶん。。。

解決策

$ rails db:migrate:reset
$ rails db:migrate

これで解決!!!

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