Error of importing robot.py on jetson nano

[lkpnthr]

Hello, I am a college student who is working on a project using Jetson Nano in Korea.
I have tried various methods to operate the Jetson nano (app utilization, joystick, etc.), but I am inquiring because an error occurred in the same place.
In all processes, an error occurs where the jetbot imports robot.py. Please give me some advice on how to solve it.
Below is an error message from the terminal.
Thank you.

Traceback (most recent call last):
  File "yahboom-jetbot.py", line 114, in <module>
  File "/usr/local/lib/python3.6/dist-packages/jetbot-0.3.0-py3.6.egg/jetbot/robot.py", line 39, in __init__
    self.motor_driver = Adafruit_MotorHAT(i2c_bus=self.i2c_bus)
  File "/usr/local/lib/python3.6/dist-packages/Adafruit_MotorHAT-1.4.0-py3.6.egg/Adafruit_MotorHAT/Adafruit_MotorHAT_Motors.py", line 235, in __init__
  File "/usr/local/lib/python3.6/dist-packages/Adafruit_MotorHAT-1.4.0-py3.6.egg/Adafruit_MotorHAT/Adafruit_PWM_Servo_Driver.py", line 59, in __init__
  File "/usr/local/lib/python3.6/dist-packages/Adafruit_MotorHAT-1.4.0-py3.6.egg/Adafruit_MotorHAT/Adafruit_PWM_Servo_Driver.py", line 95, in setAllPWM
  File "/usr/local/lib/python3.6/dist-packages/Adafruit_GPIO-1.0.4-py3.6.egg/Adafruit_GPIO/I2C.py", line 116, in write8
  File "/usr/local/lib/python3.6/dist-packages/Adafruit_PureIO/smbus.py", line 256, in write_byte_data
    self._device.write(data)
OSError: [Errno 121] Remote I/O error

[kayccc]

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