Error building the firmware image: linksys,wrt1900ac-v1

On a freshly installed OpenWrt with a few additions (wireguard, asu...), I clicked on firmware upgrade, and got this error and that I should report it here:

{
    "url": "https://sysupgrade.openwrt.org",
    "revision": "r19803-9a599fee93",
    "advanced_mode": "0",
    "branch": "22.03",
    "efi": null,
    "profile": "linksys,wrt1900ac-v1",
    "target": "mvebu/cortexa9",
    "version": "22.03.5",
    "packages": [
        "base-files",
        "busybox",
        "ca-bundle",
        "cgi-io",
        "dnsmasq",
        "dropbear",
        "firewall4",
        "fstools",
        "fwtool",
        "getrandom",
        "iwinfo",
        "jansson",
        "jshn",
        "jsonfilter",
        "kernel",
        "kmod-crypto-crc32c",
        "kmod-crypto-hash",
        "kmod-gpio-button-hotplug",
        "kmod-lib-crc-ccitt",
        "kmod-lib-crc32c",
        "kmod-mwlwifi",
        "kmod-nf-conntrack",
        "kmod-nf-conntrack6",
        "kmod-nf-flow",
        "kmod-nf-log",
        "kmod-nf-log6",
        "kmod-nf-nat",
        "kmod-nf-reject",
        "kmod-nf-reject6",
        "kmod-nfnetlink",
        "kmod-nft-core",
        "kmod-nft-fib",
        "kmod-nft-nat",
        "kmod-nft-offload",
        "kmod-ppp",
        "kmod-pppoe",
        "kmod-pppox",
        "kmod-slhc",
        "kmod-wireguard",
        "libblobmsg-json",
        "libiwinfo",
        "libiwinfo-data",
        "libiwinfo-lua",
        "libjson-c",
        "libjson-script",
        "liblua",
        "liblucihttp",
        "liblucihttp-lua",
        "libmnl",
        "libnftnl",
        "libnl-tiny",
        "libubox",
        "libubus",
        "libubus-lua",
        "libuci",
        "libuclient",
        "libucode",
        "libustream-wolfssl",
        "libwolfssl",
        "logd",
        "lua",
        "luci",
        "luci-app-attendedsysupgrade",
        "luci-app-firewall",
        "luci-app-opkg",
        "luci-app-wireguard",
        "luci-base",
        "luci-i18n-advanced-reboot-de",
        "luci-i18n-wireguard-de",
        "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-theme-bootstrap",
        "mtd",
        "mwlwifi-firmware-88w8864",
        "nano",
        "netifd",
        "nftables-json",
        "odhcp6c",
        "odhcpd-ipv6only",
        "openwrt-keyring",
        "opkg",
        "ppp",
        "ppp-mod-pppoe",
        "procd",
        "procd-seccomp",
        "procd-ujail",
        "px5g-wolfssl",
        "rpcd",
        "rpcd-mod-file",
        "rpcd-mod-iwinfo",
        "rpcd-mod-luci",
        "rpcd-mod-rrdns",
        "ubi-utils",
        "uboot-envtools",
        "ubox",
        "ubus",
        "ubusd",
        "uci",
        "uclient-fetch",
        "ucode",
        "ucode-mod-fs",
        "ucode-mod-ubus",
        "ucode-mod-uci",
        "uhttpd",
        "uhttpd-mod-ubus",
        "urandom-seed",
        "urngd",
        "usign",
        "wpad-basic-wolfssl"
    ],
    "diff_packages": true,
    "filesystem": "squashfs",
    "client": "luci/git-23.093.42303-58b861d"
}

Interestingly, after enabling searching for sysupgrades automatically after opening the tab (in config tab), and enabling the advanced mode (custom packages), and just clicking on the same button (search for sysupgrades) again, it worked.

Start by reproducing the reported request for the linksys,wrt1900ac-v1 profile against https://sysupgrade.openwrt.org, using the listed packages and 22.03.5 version. Compare the failing initial request with the successful retry after enabling advanced mode; done means the firmware image builds reliably for this request.