> Task :app:transformDexArchiveWithExternalLibsDexMergerForDebug FAILED D8: Cannot fit requested classes in a single dex file (# methods: 70644 > 65536 FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'. > com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: The number of method references in a .dex file cannot exceed 64K. Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html
解决方法：在android/app/build.gradle文件中添加
multiDexEnabled true（写在defaultConfig对象中）