Following 802.11s (Mesh) documentation, having difficulties "failed command"

I am attempting to setup a mesh network using the documentation here:

I have an AR-750 device (https://openwrt.org/toh/gl.inet/gl-ar750) which was updated to the latest Openwrt 21.02.1.

Mesh point is supported as confirmed with

iw list | grep "Supported interface modes" -A 9

Following the documentation:

In /etc/config/wireless I created a Mesh interface.

Next it says:

Note: Access by client devices is achieved by bridging the 'ap' and the 'mesh' interfaces.

Is this a general note or an instruction? If it is an instruction it doesn't explain how to do this.

Then it says to reinitialize the interface and see if it worked but it doesn't explain how to know if it worked. Here is the output:

Mon Jan 31 05:08:47 2022 kern.info kernel: [ 1492.483687] br-lan: port 3(wlan0) entered disabled state
Mon Jan 31 05:08:47 2022 kern.info kernel: [ 1492.489526] device wlan0 entered promiscuous mode
Mon Jan 31 05:08:47 2022 daemon.err hostapd: Using interface wlan0 with hwaddr xx:xx:xx:xx:xx:xx and ssid "GL-AR750-9fe-5G"
Mon Jan 31 05:08:47 2022 kern.info kernel: [ 1492.848866] br-lan: port 2(wlan1) entered blocking state
Mon Jan 31 05:08:47 2022 kern.info kernel: [ 1492.854369] br-lan: port 2(wlan1) entered forwarding state
Mon Jan 31 05:08:47 2022 daemon.notice hostapd: wlan1: interface state HT_SCAN->ENABLED
Mon Jan 31 05:08:47 2022 daemon.notice hostapd: wlan1: AP-ENABLED
Mon Jan 31 05:08:48 2022 kern.info kernel: [ 1492.989549] br-lan: port 3(wlan0) entered blocking state
Mon Jan 31 05:08:48 2022 kern.info kernel: [ 1492.995089] br-lan: port 3(wlan0) entered forwarding state
Mon Jan 31 05:08:48 2022 daemon.notice hostapd: wlan0: interface state UNINITIALIZED->ENABLED
Mon Jan 31 05:08:48 2022 daemon.notice hostapd: wlan0: AP-ENABLED
Mon Jan 31 05:08:48 2022 daemon.notice netifd: Network device 'wlan1' link is up
**Mon Jan 31 05:08:48 2022 daemon.notice netifd: radio0 (30815): command failed: Not supported (-122)**
**Mon Jan 31 05:08:48 2022 user.notice mac80211: Failed command: iw dev wlan0 mesh join mymesh freq 5180 80MHZ beacon-interval 100**
Mon Jan 31 05:08:48 2022 daemon.notice netifd: Network device 'wlan0' link is up
Mon Jan 31 05:08:56 2022 daemon.info hostapd: wlan0: STA xx:xx:xx:xx:xx:xx IEEE 802.11: authenticated
Mon Jan 31 05:08:56 2022 daemon.info hostapd: wlan0: STA xx:xx:xx:xx:xx:xx IEEE 802.11: associated (aid 1)
Mon Jan 31 05:08:56 2022 daemon.notice hostapd: wlan0: AP-STA-CONNECTED xx:xx:xx:xx:xx:xx
Mon Jan 31 05:08:56 2022 daemon.info hostapd: wlan0: STA xx:xx:xx:xx:xx:xx RADIUS: starting accounting session 337A29C60B207540
Mon Jan 31 05:08:56 2022 daemon.info hostapd: wlan0: STA xx:xx:xx:xx:xx:xx WPA: pairwise key handshake completed (RSN)

So did it fail? I bolded two lines above that has to do with the Mesh.

I can continue to create a mesh0 interface, assign it an IP address. This works however when I run the next command to display peer links and verify, I get empty output rather than results like the demonstration.

iw dev mesh0 station dump
iw dev mesh0 mpath dump

Where did I go wrong?