My with_pre_post_processing.onnx by yolov8n.pt transfored to onnx can't work

The onnx file in the examples is work:
https://github.com/microsoft/onnxruntime-inference-examples/tree/main/mobile/examples/object_detection/android
but I use oridinal yolov8n.pt to transfor yolov8n.onnx, and transfor .onnx to with_pre_post_processing.onnx can't work. When execute
'val inputTensor = OnnxTensor.createTensor(
ortEnv,
ByteBuffer.wrap(rawImageBytes),
shape,
OnnxJavaType.UINT8
)
'
it will throw Exception
'Exception caught when perform ObjectDetection
ai.onnxruntime.OrtException: Unexpected number of requestedOutputs & pinnedOutputs, expected [1,1) found 2
at ai.onnxruntime.OrtSession.run(OrtSession.java:341)
at ai.onnxruntime.OrtSession.run(OrtSession.java:242)
at ai.onnxruntime.example.objectdetection.ObjectDetector.detect(ObjectDetector.kt:45)
at ai.onnxruntime.example.objectdetection.MainActivity.performObjectDetection(MainActivity.kt:123)
at ai.onnxruntime.example.objectdetection.MainActivity.onCreate$lambda$0(MainActivity.kt:61)'

who can help me , My English is not good, thanks for every friends who can help me