Module 'libiwinfo' not found

Hi everyone,

I've read this and this but couldn't find a solution.
I'm running openwrt-19.07.6-brcm2708-bcm2710-rpi-3-ext4-factory.img on a Raspberry Pi 3.
What am I missing?

root@OpenWrt:~# lua -l iwinfo
lua: ./iwinfo.lua:3: module 'libiwinfo' not found:
	no field package.preload['libiwinfo']
	no file './libiwinfo.lua'
	no file '/usr/share/lua/libiwinfo.lua'
	no file '/usr/share/lua/libiwinfo/init.lua'
	no file '/usr/lib/lua/libiwinfo.lua'
	no file '/usr/lib/lua/libiwinfo/init.lua'
	no file './libiwinfo.so'
	no file '/usr/lib/lua/libiwinfo.so'
	no file '/usr/lib/lua/loadall.so'
stack traceback:
	[C]: in function 'require'
	./iwinfo.lua:3: in main chunk
	[C]: ?
	[C]: ?

root@OpenWrt:~# ldd /usr/lib/lua/iwinfo.so
	ldd (0x7f86e8e000)
	libuci.so => /lib/libuci.so (0x7f86e5e000)
	libubox.so => /lib/libubox.so (0x7f86e42000)
	libubus.so => /lib/libubus.so (0x7f86e2c000)
	libiwinfo.so => /usr/lib/libiwinfo.so (0x7f86e0d000)
	liblua.so.5.1.5 => /usr/lib/liblua.so.5.1.5 (0x7f86dd6000)
	libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x7f86db4000)
	libc.so => ldd (0x7f86e8e000)
	libnl-tiny.so => /usr/lib/libnl-tiny.so (0x7f86d9b000)

root@OpenWrt:~# opkg info libiwinfo-lua
Package: libiwinfo-lua
Version: 2019-10-16-07315b6f-1
Depends: libc, libiwinfo20181126, liblua5.1.5
Status: install user installed
Section: lang
Architecture: aarch64_cortex-a53
Size: 6769
Filename: libiwinfo-lua_2019-10-16-07315b6f-1_aarch64_cortex-a53.ipk
Description: This is the Lua binding for the iwinfo library. It provides access to all enabled
 backends.
Installed-Time: 1611061802

root@OpenWrt:~# cat /etc/os-release
NAME="OpenWrt"
VERSION="19.07.6"
ID="openwrt"
ID_LIKE="lede openwrt"
PRETTY_NAME="OpenWrt 19.07.6"
VERSION_ID="19.07.6"
HOME_URL="https://openwrt.org/"
BUG_URL="https://bugs.openwrt.org/"
SUPPORT_URL="https://forum.openwrt.org/"
BUILD_ID="r11278-8055e38794"
OPENWRT_BOARD="brcm2708/bcm2710"
OPENWRT_ARCH="aarch64_cortex-a53"
OPENWRT_TAINTS=""
OPENWRT_DEVICE_MANUFACTURER="OpenWrt"
OPENWRT_DEVICE_MANUFACTURER_URL="https://openwrt.org/"
OPENWRT_DEVICE_PRODUCT="Generic"
OPENWRT_DEVICE_REVISION="v0"
OPENWRT_RELEASE="OpenWrt 19.07.6 r11278-8055e38794"