我已经使用react-native 0.63创建了一个新项目\n当我在ios模拟器上运行时一切正常\n但是当尝试在android上运行它时，它不起作用并给我这个错误
\nFAILURE: Build failed with an exception.\n\n* What went wrong:\nCould not determine the dependencies of task \':app:installDebug\'.\n> SDK location not found. Define location with an ANDROID_SDK_ROOT environment variable or by setting the sdk.dir path in your project\'s local properties file at \'/Volumes/SSD2/developer/MyProject/AwesomeProject/android/local.properties\'.\n\n* Try:\nRun with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.\n\n* Get more help at https://help.gradle.org\n\nBUILD FAILED in 2s\n\nerror Failed …