IOError: [Errno 1] Operation not permitted

[wintho.21 (Wintho)]

I used servo.py to rotate my servo motor (connected to pin 6), it work did work. However, the next day I run it with no changes made on the code, it appeared error.
Require urgent help. Thank you in advance
the code:
import sys
import time
import navio.pwm

PWM_OUTPUT = 5
SERVO_MIN = 1.250 #ms
SERVO_MAX = 1.750 #ms

with navio.pwm.PWM(PWM_OUTPUT) as pwm:
pwm.set_period(50)
pwm.enable()

while (True):
    pwm.set_duty_cycle(SERVO_MIN)
    time.sleep(1)
    pwm.set_duty_cycle(SERVO_MAX)
    time.sleep(1)

the error:
Traceback (most recent call last):
File “try.py”, line 9, in
with navio.pwm.PWM(PWM_OUTPUT) as pwm:
File “/home/pi/Navio2/Python/navio/pwm.py”, line 15, in enter
self.initialize()
File “/home/pi/Navio2/Python/navio/pwm.py”, line 34, in initialize
pwm_export.write(str(self.channel))
IOError: [Errno 1] Operation not permitted

[olesia.riman]

Wintho,

Do you see the same error if you log in as a root?

Cannot initialize/control PWM when running ROS node (permission denied)

Hi, @djsuo You can’t use sudo as your environment variables aren’t set for user root, therefore it’s impossible to run rosrun. You can login as root and source setup.bash. Then everything should work.

[wintho.21 (Wintho)]

Yup

[olesia.riman]

It looks like the script test.py cannot import the necessary module properly. Could be that the script is just out of the necessary folder.

Can you revert the Navio2/Python repository to the initial state and test it again?

[wintho.21 (Wintho)]

Sorry, how can i do that?
I did uninstall and reinstall it.

[olesia.riman]

You can use the command git reset --hard for it. You can also delete the whole folder and clone it again using the git clone command.