Message in Korean (한국어)
동일한 엔터티가 이미 있는 컬렉션에 '<var>Type Name</var>' 형식의 엔터티를 추가하려고 했습니다.
Unlocalized message
An attempt was made to add entity of type '<var>Type Name</var>' to a collection in which the same entity already exists.
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