Junn_

중복 클래스 오류 kotlin-stdlib 버전 문제 시도1 gradle.properties android.enableJetifier=true android.useAndroidX=true 시도2 File - Invalidate Caches - INVALIDATE AND RESTART 해결 build.gradle(:app) configurations.all { ... details.useVersion "1.6.+" // 1.+ -> 1.6+로 변경 }

Unsupported class file major version 55 현재 jdk버전과 호환되지 않을때 발생하는 에러 JDK 설치 https://www.oracle.com/java/technologies/javase/jdk11-archive-downloads.html Java Archive Downloads - Java SE 11 WARNING: These older versions of the JRE and JDK are provided to help developers debug issues in older systems. They are not updated with the latest security patches and are not recommended for use in production..