Ok so after further reading I found info on the issue, it seems that these are debug messages, we can safaly ignore them. homeassistant forum

I am having the exact same issue as kobipes. I am also on hass.io and I have not been able to resolve it. I am using an Arduino Nano with the RF24l01 connected to a Pi using USB (ttyUSB0). No go, configuration errors as stated from your post. However when I use an Arduino Uno on ttyACM i managed to get it working as long as you cold boot the Pi during config changes. Any help will be really appreciated!