Cant import Servokit

[FawziLinggo]

when i run the code i get an error like this :

File "/home/coffee/.local/lib/python3.6/site-packages/adafruit_servokit.py", line 36, in <module> from adafruit_pca9685 import PCA9685

File "/home/coffee/.local/lib/python3.6/site-packages/adafruit_pca9685.py", line 41, in <module> from adafruit_bus_device import i2c_device

File "/home/coffee/.local/lib/python3.6/site-packages/adafruit_bus_device/i2c_device.py", line 26, in <module> class I2CDevice:

File "/home/coffee/.local/lib/python3.6/site-packages/adafruit_bus_device/i2c_device.py", line 65, in I2CDevice self, buf: WriteableBuffer, *, start: int = 0, end: Optional[int] = None

NameError: name 'WriteableBuffer' is not defined