Failed to create element 'src_bin_muxer'

Hi @Amycao ,

I have already create a new post, with specific docker I used, samples used, errors.
Here is the link: The DeepStream image nvcr.io/nvidia/deepstream-l4t:5.1-21.02-samples pulled from NGC to my NVIDIA NX failed to start any application
We can transfer the discussion to this new post if possible. Thanks.