Update react-native-contacts: rn npm install react-native-contacts@latest. Use JDK 17: Install JDK 17 and set JAVA_HOME in android/gradle.properties with org.gradle.java.home=/path/to/jdk17. Update build.gradle: Set compileSdkVersion = 34, targetSdkVersion = 34, and buildToolsVersion = "34.0.0" in android/build.gradle. Upgrade Gradle: In gradle-wrapper.properties, use gradle-8.3-bin.zip and classpath("com.android.tools.build:gradle:8.3.0") in android/build.gradle. Remove manual linking: Delete any react-native-contacts entries in MainApplication.java and settings.gradle. Clean & rebuild: Run npx react-native clean && cd android && ./gradlew clean && cd .. && npx react-native run-android. if the isue still exist check for duplicate dependencies in android/app/build.gradle or run ./gradlew assembleDebug --stacktrace for details