BLTouch error Marlin 2.x (on SKR 1.3)

I have some issue with my BLTouch (I'm new to bed levelling) : I compiled Marlin 2.x (for my SKR 1.3) for a Antclabs BLTouch, and everytime I power on the printer, it shows this error message: Failed to enable Bed Leveling, echo Bed Levelling off, echo : Fade Height 0, FF, ok:

The LED of the BLTouch is on, I can still deploy and stow the pin, and do "levelling ABL" but Homing Z (for example) is not working. I linked the config.h and config_adv.h in case needed below:

• I have potentially find the problem, need time to confirm, and I'll write here, but thanks – math45 Mar 11 '20 at 2:03
• it's fixed : it's because I didn't level the bed once after flashing the firmware, once it has been done the error is no more – math45 Mar 11 '20 at 3:12
• Please post a proper answer in the answer section, not in comments. You should describe in more detail what you did to fix it so it may help others in the future! You can even accept the answer after 48 hours. Thanks! – 0scar Mar 11 '20 at 5:50
• Please post an answer, and mark it as the accepted answer, as you have solved it, so that the question gets removed from the unanswered question queue. As we are a beta site we need to keep the unanswered queue as short as possible. Thank you – Greenonline Feb 10 at 14:52