Omnia LEDs migrate can not access new sysfs files in postinst

fix-omnia-leds-migrate/postinst: Command failed: Not found
/usr/libexec/rainbow/led_activity.sh: line 165: /sys/class/leds/rgb:wan/trigger: No such file or directory
grep: /sys/class/leds/rgb:wan/trigger: No such file or directory
Warning: activity setup failed for: wan
/usr/libexec/rainbow/led_activity.sh: line 165: /sys/class/leds/rgb:wlan-1/trigger: No such file or directory
grep: /sys/class/leds/rgb:wlan-1/trigger: No such file or directory
Warning: activity setup failed for: wlan-1
/usr/libexec/rainbow/led_activity.sh: line 165: /sys/class/leds/rgb:wlan-2/trigger: No such file or directory
grep: /sys/class/leds/rgb:wlan-2/trigger: No such file or directory
Warning: activity setup failed for: wlan-2
/usr/libexec/rainbow/led_activity.sh: line 165: /sys/class/leds/rgb:wlan-3/trigger: No such file or directory
grep: /sys/class/leds/rgb:wlan-3/trigger: No such file or directory
Warning: activity setup failed