wyx17623

Results 1 issues of wyx17623

当视频中没有人或者车可以检测时就报错

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![image](https://user-images.githubusercontent.com/53212210/172113298-2f3f98da-5eb5-4d4f-8b7a-b4a6fb09f94d.png) ![image](https://user-images.githubusercontent.com/53212210/172113398-dfefbbdf-9e87-4879-8048-7dde3c23d036.png)