vivo x20a推流报空指针

[w4901]

java.lang.NullPointerException
Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()' on a null object reference
com.qiniu.pili.droid.streaming.cam.e.a(CameraUtils.java:308)

com.qiniu.pili.droid.streaming.cam.e.a(CameraUtils.java:308)

2 com.qiniu.pili.droid.streaming.cam.c.a(CameraManager.java:968)
3 com.qiniu.pili.droid.streaming.cam.c.a(CameraManager.java:47)
4 com.qiniu.pili.droid.streaming.cam.c$e$1.run(CameraManager.java:1420)
5 android.os.Handler.handleCallback(Handler.java:751)
6 android.os.Handler.dispatchMessage(Handler.java:95)
7 android.os.Looper.loop(Looper.java:181)
8 android.os.HandlerThread.run(HandlerThread.java:61)