Solved.
I read very carefully the explanations of the IBusBM library.

I use the BNO055 and IBusBM, IbusServo libraries. Used separately, it works fine. When I use them together....the code freezes or the board restarts... does anyone know how I can solve the problem...!!! why BNO055 messes up servo signals or why messes up I2C... Uart...!!! #include <IBusBM.h> // ====...

https://github.com/arduino-libraries/BNO055 = Ok