Createdb: エラー: データベースの作成に失敗しました: エラー: データベース "discourse" は既に存在します

That’s strange. I don’t see how that could happen, as such an error should get caught when the code was committed. You might just try to rebuild again.

I see that you have the unsupported-install tag chosen, but this looks like a standard install to me.

「いいね!」 2