mt7603 mt7628 ap+sta not work

1. setup wireless AP + STA, and STA connect ok
2. change /etc/config/wireless and set the STA password key to ‘’ then /etc/init.d/network reload
3. again change /etc/config/wireless and set STA password key to the correct password
4. /etc/init.d/network reload, STA would never works again.

Tue Nov 23 19:53:49 2021 daemon.notice wpa_supplicant[1876]: wlan0: CTRL-EVENT-DISCONNECTED bssid=bc:1a:e4:3f:77:74 reason=3 locally_generated=1
Tue Nov 23 19:53:49 2021 daemon.err wpa_supplicant[1876]:  Failed to stop hostapd AP interfaces
Tue Nov 23 19:53:49 2021 daemon.err wpa_supplicant[1876]:  Failed to stop hostapd AP interfaces
Tue Nov 23 19:53:49 2021 daemon.notice wpa_supplicant[1876]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Tue Nov 23 19:53:54 2021 daemon.err wpa_supplicant[1876]: Line 8: Invalid passphrase length 0 (expected: 8..63) '"'.
Tue Nov 23 19:53:54 2021 daemon.err wpa_supplicant[1876]: Line 8: failed to parse psk '""'.
Tue Nov 23 19:53:54 2021 daemon.err wpa_supplicant[1876]: Line 11: failed to parse network block.
Tue Nov 23 19:53:54 2021 daemon.err wpa_supplicant[1876]: Failed to read or parse configuration '/var/run/wpa_supplicant-wlan0.conf'.
Tue Nov 23 19:53:54 2021 daemon.notice netifd: radio0 (7740): WARNING (wireless_add_process): executable path /usr/sbin/wpad does not match process  path (/proc/exe)
Tue Nov 23 19:54:44 2021 daemon.notice wpa_supplicant[1876]: wlan0: CTRL-EVENT-SCAN-FAILED ret=-16 retry=1
Tue Nov 23 19:54:45 2021 daemon.notice wpa_supplicant[1876]: wlan0: CTRL-EVENT-SCAN-FAILED ret=-16 retry=1
Tue Nov 23 19:54:46 2021 daemon.notice wpa_supplicant[1876]: wlan0: CTRL-EVENT-SCAN-FAILED ret=-16 retry=1
Tue Nov 23 19:54:48 2021 daemon.notice wpa_supplicant[1876]: wlan0: SME: Trying to authenticate with bc:1a:e4:3f:77:74 (SSID='HUAWEI-E101QX' freq=2462 MHz)
Tue Nov 23 19:54:48 2021 daemon.notice wpa_supplicant[1876]: wlan0: SME: Authentication request to the driver failed
Tue Nov 23 19:54:49 2021 daemon.notice wpa_supplicant[1876]: wlan0: SME: Trying to authenticate with bc:1a:e4:3f:77:74 (SSID='HUAWEI-E101QX' freq=2462 MHz)
Tue Nov 23 19:54:49 2021 daemon.notice wpa_supplicant[1876]: wlan0: Trying to associate with bc:1a:e4:3f:77:74 (SSID='HUAWEI-E101QX' freq=2462 MHz)
Tue Nov 23 19:54:50 2021 daemon.notice wpa_supplicant[1876]: wlan0: Associated with bc:1a:e4:3f:77:74
Tue Nov 23 19:54:50 2021 daemon.notice wpa_supplicant[1876]: wlan0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
Tue Nov 23 19:54:50 2021 daemon.notice wpa_supplicant[1876]: wlan0: Unknown event 37
Tue Nov 23 19:54:50 2021 daemon.notice wpa_supplicant[1876]: wlan0: WPA: Key negotiation completed with bc:1a:e4:3f:77:74 [PTK=CCMP GTK=CCMP]
Tue Nov 23 19:54:50 2021 daemon.notice wpa_supplicant[1876]: wlan0: CTRL-EVENT-CONNECTED - Connection to bc:1a:e4:3f:77:74 completed [id=0 id_str=]
Tue Nov 23 19:54:51 2021 daemon.notice wpa_supplicant[1876]: wlan0: Unknown event 37
Tue Nov 23 20:00:58 2021 daemon.notice wpa_supplicant[1876]: CTRL_IFACE: Detach monitor that cannot receive messages: /var/run/iwinfo-wlan0-1581\x00
Tue Nov 23 20:03:17 2021 daemon.notice wpa_supplicant[1876]: CTRL_IFACE: Detach monitor that cannot receive messages: /var/run/iwinfo-wlan0-1581\x00
Tue Nov 23 20:06:48 2021 daemon.notice wpa_supplicant[1876]: CTRL_IFACE: Detach monitor that cannot receive messages: /var/run/iwinfo-wlan0-10082\x00

Reproduce the AP+STA sequence using /etc/config/wireless and /etc/init.d/network reload, then inspect the generated /var/run/wpa_supplicant-wlan0.conf and the wpa_supplicant and netifd messages shown in the report. Done means restoring the STA password after an empty value allows the STA to reconnect without the parse, hostapd, or authentication failures.