Bpi-R2 pro debian 11 blue and green led busy problem

Hello I tried to I tried to control blue and green led on BPI-R2 PRO with linux/gpio library but i got

Unable to get line handle from ioctl : Device or resource busyWrite value 1 to GPIO at offset 30 (OUTPUT mode) on chip /dev/gpiochip0

this error could you help me ? Best Regards