/bin/bash: AIAA: command not found

/bin/bash: AIAA: command not found
Help me fix it
( ps. I cannot find the proper documentation to implement and use Clara Imaging for starters, the documentation provided by Nvidia is very complex, if there is any documentation where we can follow steps that are clearly defined like here Running TAO Toolkit on an Azure VM — TAO Toolkit 3.22.02 documentation )

AIAA command is found once you are in the docker image. is this notebook launched from within the docker? Did you build this your self or are you using our clara train example notebooks? please note the notebooks are for v4 and we are currently updating them to use v4.1 sdk