Error building the firmware image

{
"url": "https://sysupgrade.openwrt.org",
"revision": "r16847-f8282da11e",
"advanced_mode": "1",
"branch": "21.02",
"efi": null,
"profile": "raspberrypi,4-model-b",
"target": "bcm27xx/bcm2711",
"version": "22.03.6",
"packages": [
"adguardhome",
"auc",
"base-files",
"bcm27xx-gpu-fw",
"bcm27xx-userland",
"busybox",
"ca-bundle",
"ca-certificates",
"cgi-io",
"cypress-firmware-43455-sdio",
"cypress-nvram-43455-sdio-rpi-4b",
"ddns-scripts",
"dnsmasq",
"dropbear",
"e2fsprogs",
"firewall",
"fstools",
"fwtool",
"getrandom",
"hostapd-common",
"htop",
"iftop",
"ip6tables",
"iptables",
"iwinfo",
"jshn",
"jsonfilter",
"kernel",
"kmod-brcmfmac",
"kmod-fs-vfat",
"kmod-hid",
"kmod-hid-generic",
"kmod-input-core",
"kmod-input-evdev",
"kmod-ip6tables",
"kmod-ipt-conntrack",
"kmod-ipt-core",
"kmod-ipt-nat",
"kmod-ipt-offload",
"kmod-lib-crc-ccitt",
"kmod-nf-conntrack",
"kmod-nf-conntrack6",
"kmod-nf-flow",
"kmod-nf-ipt",
"kmod-nf-ipt6",
"kmod-nf-nat",
"kmod-nf-reject",
"kmod-nf-reject6",
"kmod-nls-base",
"kmod-nls-cp437",
"kmod-nls-iso8859-1",
"kmod-nls-utf8",
"kmod-ppp",
"kmod-pppoe",
"kmod-pppox",
"kmod-slhc",
"kmod-sound-arm-bcm2835",
"kmod-sound-core",
"kmod-usb-core",
"kmod-usb-hid",
"kmod-usb-net-asix-ax88179",
"libblkid",
"libblobmsg-json",
"libc",
"libcomerr",
"libext2fs",
"libf2fs",
"libip4tc",
"libip6tc",
"libiwinfo",
"libiwinfo-data",
"libiwinfo-lua",
"libjson-c",
"libjson-script",
"liblua",
"liblucihttp",
"liblucihttp-lua",
"libnl-tiny",
"libopenssl",
"libopenssl-conf",
"libsmartcols",
"libss",
"libubox",
"libubus",
"libubus-lua",
"libuci",
"libuclient",
"libustream-wolfssl",
"libuuid",
"libwolfssl",
"libxtables",
"logd",
"lua",
"luci",
"luci-app-attendedsysupgrade",
"luci-app-ddns",
"luci-app-firewall",
"luci-app-nlbwmon",
"luci-app-opkg",
"luci-app-privoxy",
"luci-app-sqm",
"luci-app-squid",
"luci-app-statistics",
"luci-app-vnstat2",
"luci-base",
"luci-lib-base",
"luci-lib-ip",
"luci-lib-jsonc",
"luci-lib-nixio",
"luci-mod-admin-full",
"luci-mod-network",
"luci-mod-status",
"luci-mod-system",
"luci-proto-ipv6",
"luci-proto-ppp",
"luci-ssl",
"luci-ssl-nginx",
"luci-theme-bootstrap",
"luci-theme-material",
"luci-theme-openwrt",
"luci-theme-openwrt-2020",
"mkf2fs",
"mtd",
"nano",
"netdata",
"netifd",
"odhcp6c",
"odhcpd-ipv6only",
"openssl-util",
"openwrt-keyring",
"opkg",
"partx-utils",
"ppp",
"ppp-mod-pppoe",
"procd",
"px5g-wolfssl",
"rpcd",
"rpcd-mod-file",
"rpcd-mod-iwinfo",
"rpcd-mod-luci",
"rpcd-mod-rrdns",
"tcpdump",
"tmux",
"ubox",
"ubus",
"ubusd",
"uci",
"uclient-fetch",
"uhttpd",
"uhttpd-mod-ubus",
"urandom-seed",
"usign",
"uwsgi",
"uwsgi-cgi-plugin",
"uwsgi-luci-support",
"uwsgi-syslog-plugin",
"wget-ssl",
"wireless-regdb",
"wpad-basic-wolfssl",
"zlib"
],
"diff_packages": true,
"filesystem": "ext4",
"client": "luci/git-22.210.54423-3b0b325"
}

Generate local signing keys...
Generate local certificate...
Package list missing or not up-to-date, generating it.

Building package index...
Downloading https://downloads.openwrt.org/releases/22.03.6/targets/bcm27xx/bcm2711/packages/Packages.gz
Updated list of available packages in /builder/build_dir/target-aarch64_cortex-a72_musl/root-bcm27xx/../../../../builder/dl/openwrt_core
Downloading https://downloads.openwrt.org/releases/22.03.6/targets/bcm27xx/bcm2711/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/base/Packages.gz
Updated list of available packages in /builder/build_dir/target-aarch64_cortex-a72_musl/root-bcm27xx/../../../../builder/dl/openwrt_base
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/base/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/luci/Packages.gz
Updated list of available packages in /builder/build_dir/target-aarch64_cortex-a72_musl/root-bcm27xx/../../../../builder/dl/openwrt_luci
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/luci/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/packages/Packages.gz
Updated list of available packages in /builder/build_dir/target-aarch64_cortex-a72_musl/root-bcm27xx/../../../../builder/dl/openwrt_packages
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/routing/Packages.gz
Updated list of available packages in /builder/build_dir/target-aarch64_cortex-a72_musl/root-bcm27xx/../../../../builder/dl/openwrt_routing
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/routing/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/telephony/Packages.gz
Updated list of available packages in /builder/build_dir/target-aarch64_cortex-a72_musl/root-bcm27xx/../../../../builder/dl/openwrt_telephony
Downloading https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/telephony/Packages.sig
Signature check passed.
Downloading file:packages/Packages
Updated list of available packages in /builder/build_dir/target-aarch64_cortex-a72_musl/root-bcm27xx/../../../../builder/dl/imagebuilder
Downloading file:packages/Packages.sig
Signature check passed.
Collected errors:

• opkg_conf_parse_file: Duplicate src declaration (openwrt_core https://downloads.openwrt.org/releases/22.03.6/targets/bcm27xx/bcm2711/packages). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_base https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/base). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_luci https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/luci). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_packages https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/packages). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_routing https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/routing). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_telephony https://downloads.openwrt.org/releases/22.03.6/packages/aarch64_cortex-a72/telephony). Skipping.

Start by reproducing the request against https://sysupgrade.openwrt.org for the raspberrypi,4-model-b profile and the listed 22.03.6 package set. Investigate why the generated package configuration contains duplicate source declarations for the OpenWrt feeds. Done means the firmware image builds without the duplicate declaration errors.