Classification model not work on sentis 1.2.0

Helllo,i am using yolov5 classifcation to identify whether person wearing safety horness corretly.
After trainning the model,tested in python.it works fine.
After exporting to onnx,it comes out ridiculous results.
And i do not know why,anybody can help?

Below was my model file and some description of the model file.
1

2

The result comes out as below
3

model file link as below:
onnx file

sample Image:

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