Can not detect servos ???

[Abduoit]

I am using ros indigo I could detect five servos by using arbotix_terminal

I want to use pypose but I am getting the following errors

Any help please ?????

imr@IMR-PC:~/pypose$ sudo chmod 777 /dev/ttyUSB0 
imr@IMR-PC:~/pypose$ ./PyPose.py 
PyPose starting... 
Opening port: /dev/ttyUSB0
Fail Read
Read Failed: Servo ID = 1
Fail Read
Read Failed: Servo ID = 2
Fail Read
Read Failed: Servo ID = 3
Fail Read
Read Failed: Servo ID = 4
Fail Read
Read Failed: Servo ID = 5
Fail Read
Read Failed: Servo ID = 6
Fail Read
Read Failed: Servo ID = 7
Fail Read
Read Failed: Servo ID = 8
Fail Read
Read Failed: Servo ID = 9
Fail Read
Read Failed: Servo ID = 10
Fail Read
Read Failed: Servo ID = 11
Fail Read
Read Failed: Servo ID = 12
Fail Read
Read Failed: Servo ID = 13
Fail Read
Read Failed: Servo ID = 14
Fail Read
Read Failed: Servo ID = 15
Fail Read
Read Failed: Servo ID = 16
Fail Read
Read Failed: Servo ID = 17
Fail Read
Read Failed: Servo ID = 18