I am using a TP-Link Archer BE450 in snapshot and this happens when I try to enable band steering. This is my /etc/config/wireless:
config wifi-device 'radio0'
option type 'mac80211'
option path 'soc/11300000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0'
option radio '0'
option band '2g'
option channel 'auto'
option htmode 'HT40'
option country 'TR'
option cell_density '0'
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'OpenWrt'
option encryption 'psk2'
option key '12345678'
option bss_transition '1'
option ieee80211k '1'
config wifi-device 'radio1'
option type 'mac80211'
option path 'soc/11300000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0'
option radio '1'
option band '5g'
option channel 'auto'
option htmode 'EHT80'
option country 'TR'
option cell_density '0'
config wifi-iface 'default_radio1'
option device 'radio1'
option network 'lan'
option mode 'ap'
option ssid 'OpenWrt'
option encryption 'psk2'
option key '12345678'
option bss_transition '1'
option ieee80211k '1'