**Describe the bug**
A clear and concise description of what the bug is.

**The version of utilcode: [e.g. 1.16.3]**

**The device: [e.g. Nexus 5X]**

**The version of device: [e.g. API 27]**

**The code:**
[e.g.
```java
CrashUtils.init();
```
]

**The stack of crash:**
[e.g.
```
Caused by: java.lang.NullPointerException: u should init first
   at com.blankj.utilcode.util.Utils.getApp(Utils.java:98)
   at com.blankj.utilcode.util.CrashUtils.<clinit>(CrashUtils.java:55)
   at com.blankj.utilcode.util.CrashUtils.init(CrashUtils.java:168) 
   at com.blankj.androidutilcode.UtilsApp.initCrash(UtilsApp.java:71) 
   at com.blankj.androidutilcode.UtilsApp.onCreate(UtilsApp.java:33) 
```
]

**Screenshots**
If applicable, add screenshots to help explain your problem.


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