deepstream-app yolo createLReLUPlugin error

I am trying to run YOLO from deepstream SDK /sources/objectDetector_Yolo
just following the README
when i ran
deepstream-app -c deepstream_app_config_yoloV3.txt

i had an error
deepstream-app: symbol lookup error: /xxxxx/deepstream_sdk/sources/objectDetector_Yolo/nvdsinfer_custom_impl_Yolo/libnvdsinfer_custom_impl_Yolo.so: undefined symbol: createLReLUPlugin

When i ran objectDetector_FasterRCNN i had a similar error but with createRPNPOIPlugin

I feel that i am missing a library somewhere, any pointers will be greatly appreciated

Thanks

ps I am using Xavier so it is DeepstreamSDK 4.0.2 and TensorRT 6

createLReLUPlugin and createRPNPOIPlugin are defined in tensorRT library libnvinfer_plugin.so

Please check tensorRT installation.

thanks
I found out that because i tried the examples here first:
https://github.com/NVIDIA-AI-IOT/deepstream_4.x_apps

and left the libnvinfer_plugin.so.6.0.1 with that recompiled version

Yes. You can check if there is these 2 plugins in the open source code “oss/plugin/”