as i said no option to add wps

BusyBox v1.29.3 () built-in shell (ash)

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 OpenWrt 18.06, LEDE
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root@Pc-Router:~# nano /etc/config/wireless
root@Pc-Router:~# opkg update
Downloading https://fw.gl-inet.com/releases/v18.06.5/packages-3.6/siflower/packages/Packages.gz
Updated list of available packages in /var/opkg-lists/glinet_packages
Downloading https://fw.gl-inet.com/releases/v18.06.5/packages-3.6/siflower/glinet/Packages.gz
Updated list of available packages in /var/opkg-lists/glinet_private
Downloading https://fw.gl-inet.com/releases/v18.06.5/kmod-3.6/siflower/sf19a28_nand/Packages.gz
Updated list of available packages in /var/opkg-lists/glinet_kmod
Collected errors:
 * opkg_conf_parse_file: Duplicate src declaration (glinet_packages https://fw.gl-inet.com/releases/v19.07.8/packages-3.0/ramips/packages). Skipping.
 * opkg_conf_parse_file: Duplicate src declaration (glinet_private https://fw.gl-inet.com/releases/v19.07.8/packages-3.0/ramips/glinet). Skipping.
 * opkg_conf_parse_file: Duplicate src declaration (glinet_kmod https://fw.gl-inet.com/releases/v19.07.8/kmod-3.0-newdriver/ramips/mt7621). Skipping.
root@Pc-Router:~# opkg remove wpad-mini
No packages removed.
Collected errors:
 * opkg_conf_parse_file: Duplicate src declaration (glinet_packages https://fw.gl-inet.com/releases/v19.07.8/packages-3.0/ramips/packages). Skipping.
 * opkg_conf_parse_file: Duplicate src declaration (glinet_private https://fw.gl-inet.com/releases/v19.07.8/packages-3.0/ramips/glinet). Skipping.
 * opkg_conf_parse_file: Duplicate src declaration (glinet_kmod https://fw.gl-inet.com/releases/v19.07.8/kmod-3.0-newdriver/ramips/mt7621). Skipping.
root@Pc-Router:~# opkg install wpad hostapd-utils
Unknown package 'wpad'.
Unknown package 'hostapd-utils'.
Collected errors:
 * opkg_conf_parse_file: Duplicate src declaration (glinet_packages https://fw.gl-inet.com/releases/v19.07.8/packages-3.0/ramips/packages). Skipping.
 * opkg_conf_parse_file: Duplicate src declaration (glinet_private https://fw.gl-inet.com/releases/v19.07.8/packages-3.0/ramips/glinet). Skipping.
 * opkg_conf_parse_file: Duplicate src declaration (glinet_kmod https://fw.gl-inet.com/releases/v19.07.8/kmod-3.0-newdriver/ramips/mt7621). Skipping.
 * opkg_install_cmd: Cannot install package wpad.
 * opkg_install_cmd: Cannot install package hostapd-utils.
root@Pc-Router:~# reboot