Hi,
I use prodigy v1.11.5 with ner.manual recipe and I couldn't succeed to save train-curve results with the below command which I took from the prodigy doc.
Hi @senol , you can remove the output part of the command. There's no output argument for train-curve 
The train-curve command is useful for diagnostics. If you wish to train a model, then prodigy train is what you're looking for. Will update the documentation (thanks for pointing it out )