ERROR: Deserialize engine failed because file path: /opt/nvidia/deepstream/deepstream-5.1/samples/configs/deepstream-app/../ engine open error

jetson nano 4gb
deepstream 5.1
jetpack 4.5.1

i installed deepstream 5.1 as shown in the method below

when i try to execute this following deepstream-app i get this error as shown in below snapshot

Hi,
Please specify which you believe is one error?

its " [ERROR: Deserialize engine failed because file path: /opt/nvidia/deepstream/deepstream-5.1/samples/configs/deepstream-app/…/ …/models/primary_Detector_Nano/resnet10.caffemodel_b0_gp0_fp10.engine open error"

If your engine is not gererated when you run the app, it will raise this error. then it will build the engine, which will be generated, for next time to run without building it again if you specify the engine in the config.

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