I had a similar issue to this and it turned out that the error was caused by the hyperion service running as pi instead of root. I have to use GPIO pin 18/PWM to control the strip and that can only be done by root.
I had a similar issue to this and it turned out that the error was caused by the hyperion service running as pi instead of root. I have to use GPIO pin 18/PWM to control the strip and that can only be done by root.