Servos going crazy during Calibration mode

Hey all, I'm new to the community and apologies for the basic question - I'm at the early stages of setting up Nybble and was going to calibrate the servos before installing to the body, but upon pressing 'c' to go into calibration mode, 5 of my servos are spinning like crazy even after 3 minutes so I pressed reset, why is this and how do I calibrate properly? This is what serial monitor is showing:

Servo:27.00

Skill

TaskQ

Ready!

g

d

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	

0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	

c

THANKS MUCH!!!