完整錯誤信息：
安卓使用SDK版本：26.
Error: /home/tung/git_project/copay-ipchain1.0.5/platforms/android/gradlew: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':transformDexArchiveWithExternalLibsDexMergerForDebug'.
> java.lang.RuntimeException: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex
解決方法：
刪除platforms/android下的.gradle文件夾即可