创建datax任务，启动执行失败

### Search before asking

- [ ] I had searched in the [issues](https://github.com/DTStack/Taier/issues) and found no similar question.

- [ ] I had searched my question on the internet but i didn't get any help.

- [ ] I had read the documentation: [Taier doc](https://dtstack.github.io/Taier) but it didn't help me.

### Description

在本地Windows的开发工具idea上面启动datax任务，报空指针异常。
shellFullCommand没看到初始化的地方

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