Element Could not be created. Exiting.

[VettedSJohnston]

I've gotten this message returned after running the execution script. I've reinstalled Deepstream twice and confirmed all the include file should be available when executing with sudo. I even downloaded a sample video and named it to match the corresponding name, since a sample video was not included with the package. I've followed the instructions verbatim twice. I'm running on an AGX Orin with Deepstream 6.1.

Trying various parameters:
vetted@ORIN1:/deepstream_lpr_app/deepstream-lpr-app$ sudo ./deepstream-lpr-app 1 2 0 us_car_test2.mp4 us_car_test2.mp4 output.264
[sudo] password for vetted:
One element could not be created. Exiting.
vetted@ORIN1:/deepstream_lpr_app/deepstream-lpr-app$ sudo ./deepstream-lpr-app 1 3 0 us_car_test2.mp4 us_car_test2.mp4 output.264
One element could not be created. Exiting.
vetted@ORIN1:/deepstream_lpr_app/deepstream-lpr-app$ sudo ./deepstream-lpr-app 1 3 0 us_car_test2.mp4 us_car_test2.mp4
One element could not be created. Exiting.
vetted@ORIN1:/deepstream_lpr_app/deepstream-lpr-app$ sudo ./deepstream-lpr-app 1 2 0 us_car_test2.mp4 us_car_test2.mp4
One element could not be created. Exiting.
vetted@ORIN1:/deepstream_lpr_app/deepstream-lpr-app$ sudo ./deepstream-lpr-app 1 1 0 us_car_test2.mp4 us_car_test2.mp4 output.264
One element could not be created. Exiting.
vetted@ORIN1:/deepstream_lpr_app/deepstream-lpr-app$ sudo ./deepstream-lpr-app 1 1 1 us_car_test2.mp4 us_car_test2.mp4 output.264
One element could not be created. Exiting.