Mongodbdump 도중 오류 해결 ~ Failed: error writing data for collection `디비명.컬렉션명` to disk: error reading collection: Failed to parse: { find: “컬렉션명”, skip: 0, snapshot: true, $readPreference: { mode: “secondaryPreferred” }, $db: “디비명” }. Unrecognized field ‘snapshot’.