I get this error

[skampala1]

root@ev3dev:~# cd ev3-print3rbot/ root@ev3dev:~/ev3-print3rbot# chmod +x writer.py root@ev3dev:~/ev3-print3rbot# ./writer.py Traceback (most recent call last): File "./writer.py", line 484, in main() File "./writer.py", line 475, in main wri = Writer(calibrate = True) File "./writer.py", line 77, in init self.calibrate() File "./writer.py", line 107, in calibrate if (self.touch_A.value()): RuntimeError: no device connected: Function not implemented root@ev3dev:~/ev3-print3rbot# chmod +x writer.py root@ev3dev:~/ev3-print3rbot# ./skampala/Desktop/ev3-print3rbot-master/writer.py -bash: ./skampala/Desktop/ev3-print3rbot-master/writer.py: No such file or directory