在使用ionic build android的时候提示这个错误

Error: /study/myApp/platforms/android/gradlew: Command failed with exit code 1 Error output: Exception in thread "main" java.lang.RuntimeException: Timeout of 120000 reached waiting for exclusive access to file: /var/root/.gradle/wrapper/dists/gradle-2.13-all/7hsc6vr6mi3i6i5m7q9hj4ci1q/gradle-2.13-all.zip     at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:61)     at org.gradle.wrapper.Install.createDist(Install.java:47)     at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)     at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)

求解