jpush报了个空值崩溃

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.intern()' on a null object reference

at android.content.Intent.addCategory(Intent.java:5992)

at cn.jpush.android.a.k.a(Unknown Source)

at cn.jpush.android.a.k.a(Unknown Source)

at cn.jpush.android.service.e.a(Unknown Source)

at cn.jpush.android.a.a.onActionRun(Unknown Source)

at cn.jiguang.d.d.a.a(Unknown Source)

at cn.jiguang.d.d.i.a(Unknown Source)

at cn.jiguang.d.d.j.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)

at java.lang.Thread.run(Thread.java:818)

请问这是什么原因引起的崩溃？