Error while requesting a build to 22.03.5 or 23.05.2 (from 21.02.7) - platform ipq806x/generic

I get the same error when I try to request a build on the mentioned versions, same source version and same packages, different target versions:

Error building the firmware image

Server response: Error: Impossible package selection

Request Data:

{
    "url": "https://sysupgrade.openwrt.org",
    "revision": "r16847-f8282da11e",
    "advanced_mode": "1",
    "branch": "21.02",
    "efi": null,
    "profile": "linksys,ea8500",
    "target": "ipq806x/generic",
    "version": "23.05.2",
    "packages": [
        "ath10k-board-qca99x0",
        "ath10k-firmware-qca99x0-ct",
        "auc",
        "base-files",
        "busybox",
        "ca-bundle",
        "cgi-io",
        "ddns-scripts",
        "ddns-scripts-services",
        "dnsmasq",
        "dropbear",
        "etherwake",
        "firewall",
        "fstools",
        "fwtool",
        "getrandom",
        "hostapd-common",
        "htop",
        "ip-full",
        "ip6tables",
        "iptables",
        "iptables-mod-conntrack-extra",
        "iptables-mod-ipopt",
        "iputils-ping",
        "iw",
        "iwinfo",
        "jshn",
        "jsonfilter",
        "kernel",
        "kmod-ata-ahci",
        "kmod-ata-ahci-platform",
        "kmod-ata-core",
        "kmod-ath",
        "kmod-ath10k-ct",
        "kmod-cfg80211",
        "kmod-crypto-hash",
        "kmod-crypto-kpp",
        "kmod-crypto-lib-chacha20",
        "kmod-crypto-lib-chacha20poly1305",
        "kmod-crypto-lib-curve25519",
        "kmod-crypto-lib-poly1305",
        "kmod-crypto-md5",
        "kmod-gpio-button-hotplug",
        "kmod-hwmon-core",
        "kmod-ifb",
        "kmod-ip6tables",
        "kmod-ipt-conntrack",
        "kmod-ipt-conntrack-extra",
        "kmod-ipt-core",
        "kmod-ipt-ipopt",
        "kmod-ipt-nat",
        "kmod-ipt-offload",
        "kmod-ipt-raw",
        "kmod-leds-gpio",
        "kmod-lib-crc-ccitt",
        "kmod-mac80211",
        "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-phy-qcom-ipq806x-usb",
        "kmod-ppp",
        "kmod-pppoe",
        "kmod-pppox",
        "kmod-sched-cake",
        "kmod-sched-core",
        "kmod-scsi-core",
        "kmod-slhc",
        "kmod-udptunnel4",
        "kmod-udptunnel6",
        "kmod-usb-core",
        "kmod-usb-dwc3",
        "kmod-usb-dwc3-qcom",
        "kmod-usb-ehci",
        "kmod-usb-ledtrig-usbport",
        "kmod-usb-ohci",
        "kmod-usb2",
        "kmod-usb3",
        "kmod-wireguard",
        "libblobmsg-json",
        "libbpf",
        "libbz2",
        "libc",
        "libdb47",
        "libelf",
        "libffi",
        "libgdbm",
        "libip4tc",
        "libip6tc",
        "libiwinfo",
        "libiwinfo-data",
        "libiwinfo-lua",
        "libjson-c",
        "libjson-script",
        "liblua",
        "liblucihttp",
        "liblucihttp-lua",
        "liblzma",
        "libncurses",
        "libnl-tiny",
        "libopenssl",
        "libopenssl-conf",
        "libpcap",
        "libpython3",
        "libreadline",
        "libsqlite3",
        "libubox",
        "libubus",
        "libubus-lua",
        "libuci",
        "libuclient",
        "libustream-openssl",
        "libuuid",
        "libwolfssl",
        "libxtables",
        "logd",
        "lua",
        "luci",
        "luci-app-attendedsysupgrade",
        "luci-app-ddns",
        "luci-app-firewall",
        "luci-app-opkg",
        "luci-app-sqm",
        "luci-app-wireguard",
        "luci-app-wol",
        "luci-base",
        "luci-lib-base",
        "luci-lib-ip",
        "luci-lib-ipkg",
        "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-proto-wireguard",
        "luci-ssl-openssl",
        "luci-theme-bootstrap",
        "mtd",
        "netifd",
        "odhcp6c",
        "odhcpd-ipv6only",
        "openssl-util",
        "openwrt-keyring",
        "opkg",
        "ppp",
        "ppp-mod-pppoe",
        "procd",
        "python3",
        "python3-asyncio",
        "python3-base",
        "python3-cgi",
        "python3-cgitb",
        "python3-codecs",
        "python3-ctypes",
        "python3-dbm",
        "python3-decimal",
        "python3-distutils",
        "python3-email",
        "python3-gdbm",
        "python3-light",
        "python3-logging",
        "python3-lzma",
        "python3-multiprocessing",
        "python3-ncurses",
        "python3-openssl",
        "python3-pydoc",
        "python3-readline",
        "python3-sqlite3",
        "python3-unittest",
        "python3-urllib",
        "python3-xml",
        "qrencode",
        "rpcd",
        "rpcd-mod-file",
        "rpcd-mod-iwinfo",
        "rpcd-mod-luci",
        "rpcd-mod-rrdns",
        "sqm-scripts",
        "swconfig",
        "tc-mod-iptables",
        "tc-tiny",
        "tcpdump",
        "terminfo",
        "ubi-utils",
        "uboot-envtools",
        "ubox",
        "ubus",
        "ubusd",
        "uci",
        "uclient-fetch",
        "uhttpd",
        "uhttpd-mod-ubus",
        "urandom-seed",
        "urngd",
        "usign",
        "wireguard-tools",
        "wireless-regdb",
        "wpad-basic-wolfssl",
        "zlib"
    ],
    "diff_packages": true,
    "filesystem": "squashfs",
    "client": "luci/git-22.210.54423-3b0b325"
}

STDERR:

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/23.05.2/targets/ipq806x/generic/packages/Packages.gz
Updated list of available packages in /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/../../../../builder/dl/openwrt_core
Downloading https://downloads.openwrt.org/releases/23.05.2/targets/ipq806x/generic/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/base/Packages.gz
Updated list of available packages in /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/../../../../builder/dl/openwrt_base
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/base/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/luci/Packages.gz
Updated list of available packages in /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/../../../../builder/dl/openwrt_luci
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/luci/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/packages/Packages.gz
Updated list of available packages in /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/../../../../builder/dl/openwrt_packages
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/routing/Packages.gz
Updated list of available packages in /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/../../../../builder/dl/openwrt_routing
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/routing/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/telephony/Packages.gz
Updated list of available packages in /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/../../../../builder/dl/openwrt_telephony
Downloading https://downloads.openwrt.org/releases/23.05.2/packages/arm_cortex-a15_neon-vfpv4/telephony/Packages.sig
Signature check passed.
Downloading file:packages/Packages
Updated list of available packages in /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/../../../../builder/dl/imagebuilder
Downloading file:packages/Packages.sig
Signature check passed.
Collected errors:
 * opkg_install_cmd: Cannot install package python3-gdbm.
make[2]: *** [Makefile:189: package_install] Error 255
make[1]: *** [Makefile:154: _call_manifest] Error 2
make: *** [Makefile:274: manifest] Error 2

Reproduce the supplied build request for profile linksys,ea8500 on target ipq806x/generic, starting with the imagebuilder package-install step reported at Makefile:189. Trace why python3-gdbm cannot be installed for release 23.05.2 and compare the requested package list with the generated package indexes. Done means the request completes successfully or the incompatibility is reported clearly.