Swift 샘플 실행 오류

가이드에 나온대로 url 스키마 등 추가하고, 샘플코드 그대로 실행해봤더니, 카카오네비로 이동되고 앱 실행후 바로강제종료가 됩니다.

2020-08-11 08:48:29607 [:speech_balloon:][NaviApi.swift 80:17] -> ===================================================================================================

2020-08-11 08:48:29620 [:speech_balloon:][KakaoSDKCommon.swift 80:21] -> sdk_version : 2.0.0

2020-08-11 08:48:29623 [:speech_balloon:][NaviApi.swift 85:17] -> url: kakaonavi-sdk://navigate?param=%7B%22destination%22:%7B%22name%22:%22%EC%B9%B4%EC%B9%B4%EC%98%A4%ED%8C%90%EA%B5%90%EC%98%A4%ED%94%BC%EC%8A%A4%22,%22x%22:321286,%22y%22:533707%7D,%22via_list%22:%5B%7B%22name%22:%22%ED%8C%90%EA%B5%90%EC%97%AD%201%EB%B2%88%EC%B6%9C%EA%B5%AC%22,%22x%22:321525,%22y%22:532951%7D%5D%7D&apiver=1.0&appkey=e283d96d10cf199790b516af0ec7a92f&extras=%7B%22KA%22:%22sdk%5C/2.0.0%20sdk_type%5C/swift%20os%5C/ios-13.6%20lang%5C/ko-KR-KR%20res%5C/375x812%20device%5C/iPhone%20origin%5C/com.thinktree.tingdev%20app_ver%5C/1.0.1%22,%22appPkg%22:%22com.thinktree.tingdev%22%7D

로그 입니다.

추가로 WGS84 좌표계를 사용하고싶은데, x,y좌표 파라미터가 int64로 고정되어있습니다. 경위도좌표는 double형인데 int64로 형변환해서 넣어야 하는건가요?