StandardError: An error has occurred, this and all later migrations canceled: undefined method `shop_id’ for

新たにカラムを追加する際、

StandardError: An error has occurred, this and all later migrations canceled:

undefined method `shop_id' for ....

というエラーが出てきました

migration ファイルの中で以下のようにインスタンスを作っていたことが原因でした

Something.create()

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