Usually for this kind of error, please check
- The $KEY is really set when you train the etlt model. Also make sure it is correct.
- The key is correct when you run tlt-converter. The key should be exactly the same as used in the TLT training phase
- The etlt model is available
Reference topic:
https://devtalk.nvidia.com/default/topic/1067539/transfer-learning-toolkit/tlt-converter-on-jetson-nano-error-/
https://devtalk.nvidia.com/default/topic/1065680/transfer-learning-toolkit/tlt-converter-uff-parser-error/?offset=11#5397152