Encountered an error while building a multiplexed output with a gstream pipeline

Please provide complete information as applicable to your setup.

**• Hardware Platform (Jetson / GPU) Jetson
**• DeepStream Version 6.0.1

jetson nx
I encountered the following error when using the pipline command to build a pipeline, how to solve it?

my code is as follows:
sudo gst-launch-1.0 -e --gst-debug=*:3 v4l2src device=/dev/video0 !
video/x-raw,format=YUY2,width=1920,height=1080,framerate=60/1 !
videoconvert ! video/x-raw,format=NV12,width=1920,height=1080,framerate=60/1 !
timeoverlay !
queue ! nvvideoconvert !
‘video/x-raw(memory:NVMM), width=1920,height=1080’ !
m.sink_0 nvstreammux name=m width=1920 height=1080 batch-size=1 batched-push-timeout=40000 !
nvinfer config-file-path=dstest1_pgie_config.txt ! nvvideoconvert !
nvdsosd ! nvvideoconvert !
tee name=t
t. ! queue ! nvv4l2h265enc ! h265parse ! splitmuxsink
max-size-time=10000000000 muxer-factory=matroskamux
t. ! queue ! nvv4l2h265enc ! maxperf-enable=1 control-rate=1 bitrate=4000000 insert-vui=1 insert-sps-pps=1 !
rtph265pay ! udpsink clients= async=false sync=0

The error is as follows: