Raspberry 3 WS281 PWM not Working

[FabiThe1]

On Raspberry Pi 3+ the LED WS281x isn’t working with PWM. Tried it with GPIO 18. It works with the standalone Hyperion OS, but with the same settings on the Hassio Add on, it does not work. The Log:

Can’t open device file : Operation not permitted 2021-01-12T13:45:23.769 hyperiond LEDDEVICE : Device disabled, device ‘ws281x’ signals error: ‘Failed to open. Error message: Failed to create mailbox device’ Can’t open device file : Operation not permitted

At the Remote Control page, the LED device button on the right side is also always off. When i push it on, directly the message

Can’t open device file : Operation not permitted

appears in the log.

The Hassio System is installed with 32 bit image directly with the hassio OS standalone on the SD Card.

I also tried deactivating Audio in the config file and hdmi forcing. Both did not work.