java.lang.NoSuchMethodError: No virtual method toPath()Ljava/nio/file/Path; in class Ljava/io/File; or its super classes (declaration of 'java.io.File' appears in /system/framework/core-oj.jar)
at org.apache.commons.io.FileUtils.isSymlink(FileUtils.java:3107)
at org.apache.commons.io.FileUtils.deleteDirectory(FileUtils.java:1616)
at org.fdroid.fdroid.DeleteCacheService.onHandleWork(DeleteCacheService.java:30)
at android.support.v4.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:391)
at android.support.v4.app.JobIntentService$CommandProcessor.doInBackground(JobIntentService.java:382)
at android.os.AsyncTask$2.call(AsyncTask.java:304)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)