@NickJSI As mentioned above, your issue might be the same as ours. You got the same error message we got when following the written docs on a Jetson Nano trying to deploy Roboflow 3.0 models.
According to the answer of @Paul (Error deploying custom trained model on NVIDIA Jetson Xavier - #15 by Paul) you could follow the new documentation (NVIDIA Jetson - Roboflow Docs), but I have bumped into quota issues that might be also the case for you and will require someone from roboflow to solve.