카카오 로그인 팝업에 아무것도 표시 안됩니다

웹페이지에서 카카오로그인을 구현하고 있는데요.
카카오아이콘 클릭하면 팝업이 뜨는데, 아무 내용도 안뜹니다.
팝업의 URL은 다음과 같습니다.

intent:#Intent;action=com.kakao.talk.intent.action.CAPRI_LOGGED_IN_ACTIVITY;launchFlags=0x08880000;S.com.kakao.sdk.talk.appKey=8b9698dd84432dc8d18dcd35a899736d;S.com.kakao.sdk.talk.redirectUri=https://kapi.kakao.com/cors/afterlogin.html;S.com.kakao.sdk.talk.state=78s8zu6in45t9ocg44v2k8;S.com.kakao.sdk.talk.kaHeader=sdk/1.40.14%20os/javascript%20sdk_type/javascript%20lang/ko%20device/Win32%20origin/http%3A%2F%2Flocalhost;S.com.kakao.sdk.talk.extraparams=%7B%22client_id%22%3A%228b9698dd84432dc8d18dcd35a899736d%22%7D;S.browser_fallback_url=https%3A%2F%2Fkauth.kakao.com%2Foauth%2Fauthorize%3Fclient_id%3D8b9698dd84432dc8d18dcd35a899736d%26redirect_uri%3Dhttps%253A%252F%252Fkapi.kakao.com%252Fcors%252Fafterlogin.html%26response_type%3Dcode%26state%3D78s8zu6in45t9ocg44v2k8%26proxy%3DeasyXDM_Kakao_sowfj7n8fa_provider%26ka%3Dsdk%252F1.40.14%2520os%252Fjavascript%2520sdk_type%252Fjavascript%2520lang%252Fko%2520device%252FWin32%2520origin%252Fhttp%25253A%25252F%25252Flocalhost%26origin%3Dhttp%253A%252F%252Flocalhost;end;

위 팝업에서 크롬 개발자 도구 열어보면 콘솔에
Failed to launch ‘intent:#Intent;action=com.kakao.talk.intent.action.CAPRI_LOGGED_IN_ACTIVITY;launchFlags=0x08880000;S.com.kakao.sdk.talk.appKey=8b9698dd84432dc8d18dcd35a899736d;S.com.kakao.sdk.talk.redirectUri=https://kapi.kakao.com/cors/afterlogin.html;S.com.kakao.sdk.talk.state=78s8zu6in45t9ocg44v2k8;S.com.kakao.sdk.talk.kaHeader=sdk/1.40.14%20os/javascript%20sdk_type/javascript%20lang/ko%20device/Win32%20origin/http%3A%2F%2Flocalhost;S.com.kakao.sdk.talk.extraparams=%7B%22client_id%22%3A%228b9698dd84432dc8d18dcd35a899736d%22%7D;S.browser_fallback_url=https%3A%2F%2Fkauth.kakao.com%2Foauth%2Fauthorize%3Fclient_id%3D8b9698dd84432dc8d18dcd35a899736d%26redirect_uri%3Dhttps%253A%252F%252Fkapi.kakao.com%252Fcors%252Fafterlogin.html%26response_type%3Dcode%26state%3D78s8zu6in45t9ocg44v2k8%26proxy%3DeasyXDM_Kakao_sowfj7n8fa_provider%26ka%3Dsdk%252F1.40.14%2520os%252Fjavascript%2520sdk_type%252Fjavascript%2520lang%252Fko%2520device%252FWin32%2520origin%252Fhttp%25253A%25252F%25252Flocalhost%26origin%3Dhttp%253A%252F%252Flocalhost;end;’ because the scheme does not have a registered handler.
라고 뜹니다.
전에 잘 되었는데요. 오늘 테스트해보니 이렇게 되고 있습니다.

안녕하세요.

PC 에서 개발자 모바일 모드로 로그인 하셨나요?

모바일인경우 인텐트 스킴으로 카카오톡 앱을 호출하여 인증합니다.
PC 에서는 인텐트 스킴 호출이 안되니 에러 발생하는데요.

에뮬레이터나 테스트 기기로 모바일 테스트 부탁드려요.