Deepstream python apps deepstream-test1 unable to create source

Hi, have you figured it out yet? I’m running into the same problem.

$ deepstream-app -c /opt/nvidia/deepstream/deepstream-5.0/samples/configs/deepstream-app/source4_1080p_dec_infer-resnet_tracker_sgie_tiled_display_int8.txt

This command also didn’t work for me. I got the error:
** ERROR: <create_multi_source_bin:1057>: Failed to create element ‘src_bin_muxer’
** ERROR: <create_multi_source_bin:1132>: create_multi_source_bin failed
** ERROR: <create_pipeline:1296>: create_pipeline failed
** ERROR: main:636: Failed to create pipeline
Quitting
App run failed