[TLT-yolov4-Deepstream ] ERROR: [TRT]: UffParser: Unsupported number of graph 0

• Hardware Platform (Jetson / GPU): Jetson Xavier
• DeepStream Version : 5.1
*• JetPack Version : 4.3
• TensorRT Version : 7.1
• Issue Type : Bugs
I am using TLT to train new model base on backbone model resnet18 using yolov4 network .
For trainning model, I followed step by step of yolov4 sameples, and it is ok until "yolo_v4 inference "
The problem occured when I tried to push etlt model to deepstream app:
ERROR: [TRT]: UffParser: Unsupported number of graph 0
parseModel: Failed to parse UFF model
ERROR: failed to build network since parsing model errors.
ERROR: Failed to create network using custom network creation function
ERROR: Failed to get cuda engine from custom library API
0:00:02.104041869 31910 0x7f30002330 ERROR nvinfer gstnvinfer.cpp:613:gst_nvinfer_logger:<primary_gie> NvDsInferContext[UID 1]: Error in NvDsInferContextImpl::buildModel() <nvdsinfer_context_impl.cpp:1736> [UID = 1]: build engine file failed
Bus error (core dumped)

Please help to support how to debug it.

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