ERROR: <create_multi_source_bin:1320>: Failed to create element 'src_bin_muxer'

Please provide complete information as applicable to your setup.

**• Hardware Platform (Jetson / GPU) jertson nano
**• DeepStream Version 5.1
• JetPack Version (valid for Jetson only) 4.5.1
**• CUDA: 10.2.89

  • cuDNN: 8.0.0.180
  • TensorRT: 7.1.3.0
  • Visionworks: 1.6.0.501
  • OpenCV: 4.1.1 compiled CUDA: NO
  • VPI: ii libnvvpi1 1.0.15 arm64 NVIDIA Vision Programming Interface library
  • Vulkan: 1.2.70

*** ERROR: <create_multi_source_bin:1320>: Failed to create element ‘src_bin_muxer’
** ERROR: <create_multi_source_bin:1411>: create_multi_source_bin failed
** ERROR: <create_pipeline:1294>: create_pipeline failed
** ERROR: main:636: Failed to create pipeline
Quitting
App run failed

I try
rm ${HOME}/.cache/gstreamer-1.0/registry.*
it didn’t work

Can you run “gst-inspect-1.0 nvstreammux” and check the output?

output is No such element or plugin ‘nvstreammux’

Please reinstall your board. The deepstream SDK is not installed correctly.

https://docs.nvidia.com/metropolis/deepstream/dev-guide/text/DS_Quickstart.html#jetson-setup