当我尝试运行我的应用程序时，出现此错误。我安装了 flags -r -t 但它不能解决问题。我该如何解决这个问题？
12/30 21:25:11: Launching 'app' on Nexus 6 API 22 Lollipop.
Installation did not succeed.
The application could not be installed.
Installation failed due to: ''pm install-create -r -t -S 1461173' returns error 'Unknown failure: Error: java.lang.NullPointerException: Attempt to invoke interface method 'android.os.storage.StorageVolume[] android.os.storage.IMountService.getVolumeList()' on a null object reference''