Hello,
I had the same problem you have mentioned here.
If you have any space in your directory path for example, '/ESP Hands-on Tutorial_Sample Code/towermon3/data', it won't work and will give you error "Failed to parse discovery file: parse of file failed..."
You have to give some path like '/ESP_Hands-on_Tutorial_Sample_Code/towermon3/data'
(basically you need to handle space characters in your directory path)
Thanks,
Bhumi Patel.