No such element or plugin 'nvstreammux' on deepstream:5.1-21.02-devel docker

Please provide complete information as applicable to your setup.

• Hardware Platform GPU
• DeepStream Version 5.1-21.02-devel
• TensorRT Version 7.2.2-1+cuda11.1
• NVIDIA GPU Driver Version 450.102.04
• Issue Type( questions, bugs)
• How to reproduce the issue ?

docker pull nvcr.io/nvidia/deepstream:5.1-21.02-devel

• Requirement details

Hello, I pull docker nvcr.io/nvidia/deepstream:5.1-21.02-devel and create container base on that image. Then check nvstreammux and nvstreamdemux not exist in gst-inspect

The first time:

gst-inspect-1.0 nvstreammux
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 

(gst-plugin-scanner:34): GStreamer-WARNING **: 14:56:15.979: Failed to load plugin '/usr/lib/x86_64-linux-gnu/gstreamer-1.0/deepstream/libnvdsgst_inferserver.so': libtritonserver.so: cannot open shared object file: No such file or directory
nvbufsurftransform:cuInit failed : 804 

(gst-plugin-scanner:35): GStreamer-WARNING **: 14:56:15.999: Failed to load plugin '/usr/lib/x86_64-linux-gnu/gstreamer-1.0/deepstream/libnvdsgst_inferserver.so': libtritonserver.so: cannot open shared object file: No such file or directory
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
nvbufsurftransform:cuInit failed : 804 
No such element or plugin 'nvstreammux'

The rest time:

gst-inspect-1.0 nvstreammux
No such element or plugin 'nvstreammux'

Seems GPU driver version is not correct. Quickstart Guide — DeepStream 5.1 Release documentation

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