Mraa-gpio list -> No Pins

Follow the instruction
https://wiki.radxa.com/Rockpi4/dev/libmraa

then

mraa-gpio list
No Pins <–

Pls Help.

Hardware: Rock Pi X v1.4

Have anyone success?

If you are using ROCK Pi X, check this:

https://wiki.radxa.com/RockpiX/dev/libmraa

Follow the instruction
https://wiki.radxa.com/RockpiX/dev/libmraa

Still can’t work.

Hardware : Rock Pi X
OS: Ubuntu 20.04

Q. Is it related to the bios version?
Q. Can you provide ever install success (mraa) condition.
Please Help.

I follow all step.
Is it something wrong?