Jetson TX1 Videoapp

Hello, when i input “gst-launch-1.0 nvcamerasrc fpsRange=“30.0 30.0” ! ‘video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)I420, framerate=(fraction)30/1’ ! nvtee ! nvvidconv flip-method=2 ! ‘video/x-raw(memory:NVMM), format=(string)I420’ ! nvoverlaysink -e” in the tx1 terminal. After Enter it shows

Setting pipeline to PAUSED …
Inside NvxLiteH264DecoderLowLatencyInitNvxLiteH264DecoderLowLatencyInit set DPB and MjstreamingNvCamHwHalDeviceRead: 18 - -1
NvCamHwHalDeviceRead: 19 - -1
NvCamHwHalDeviceRead: 20 - -1
NvCamHwHalDeviceRead: 21 - -1
NvCamHwHalDeviceRead: 22 - -1
NvCamHwHalDeviceRead: 23 - -1
NvCamHwHalDeviceRead: 24 - -1
NvCamHwHalDeviceRead: 25 - -1
NvCamHwHalDeviceRead: 26 - -1
IMX135 **** Can not open camera device: No such file or directory
NvOdmImagerOpenExpanded 462: Sensor ERR
NvOdmImagerOpenExpanded FAILED!
camera_open failed
ERROR: Pipeline doesn’t want to pause.
Setting pipeline to NULL …
Freeing pipeline …

what’s meaning? How to modify?
Thank you!

The message shows “camera open failed” that mean you may not install the camera board on you Tegra device or have HW problem to detect the camera module from your camera board.