Error building the firmware image Server response: Error: Impossible package selection

Request Data:

{
"url": "https://sysupgrade.openwrt.org",
"branch": "24.10",
"revision": "r28427-6df0e3d02a",
"efi": null,
"advanced_mode": "1",
"request_hash": "cee6febac1f3c3dc0b824cebcdf9385538e44da64694a23917aef0604257dac5",
"sha256_unsigned": "",
"client": "luci/25.037.6833142f464c",
"packages": {
"kmod-usb-storage": "6.6.73-r1",
"luci-app-statistics": "25.037.6833142f464c",
"luci-app-watchcat": "25.037.6833142f464c",
"luci-app-nlbwmon": "25.037.6833142f464c",
"opkg": "2024.10.1638eccbb1-r1",
"wpad-basic-mbedtls": "2024.09.155ace39b0-r2",
"kmod-usb-core": "6.6.73-r1",
"kmod-bonding": "6.6.73-r1",
"kmod-usb-storage-uas": "6.6.73-r1",
"luci-app-vnstat2": "25.037.6833142f464c",
"libpthread": "1.2.5-r4",
"mjpg-streamer-www-simple": "1.0.0-r6",
"rpcd": "2024.09.179f4b86e7-r1",
"kmod-nft-fib": "6.6.73-r1",
"kmod-nfnetlink": "6.6.73-r1",
"kmod-ata-ahci-platform": "6.6.73-r1",
"kmod-nf-reject6": "6.6.73-r1",
"kmod-usb-dwc3": "6.6.73-r1",
"luci-mod-system": "25.037.6833142f464c",
"kmod-nf-flow": "6.6.73-r1",
"kmod-lib-crc-ccitt": "6.6.73-r1",
"px5g-mbedtls": "11",
"getrandom": "2024.04.2685f10530-r1",
"luci-app-lldpd": "25.037.6833142f464c",
"luci-theme-bootstrap": "25.037.6833142f464c",
"kmod-pppoe": "6.6.73-r1",
"kmod-video-core": "6.6.73-r1",
"kmod-pppox": "6.6.73-r1",
"kmod-nf-reject": "6.6.73-r1",
"ath10k-firmware-qca9984-ct": "2020.11.08-r1",
"procd-ujail": "2024.12.2242d39376-r1",
"base-files": "16556df0e3d02a",
"kmod-nf-nat": "6.6.73-r1",
"kmod-crypto-crc32c": "6.6.73-r1",
"libustream-mbedtls": "2024.07.2899bd3d2b-r1",
"kmod-usb-dwc3-qcom": "6.6.73-r1",
"luci-app-uhttpd": "25.037.6833142f464c",
"firewall4": "2024.12.1818fc0ead-r1",
"uboot-envtools": "2024.07-r1",
"kmod-usb-ohci": "6.6.73-r1",
"zerotier": "1.14.1-r1",
"dnsmasq": "2.90-r4",
"usbutils": "017-r1",
"kmod-video-uvc": "6.6.73-r1",
"kmod-video-gspca-sn9c20x": "6.6.73-r1",
"rpcd-mod-ucode": "2024.09.179f4b86e7-r1",
"kmod-crypto-acompress": "6.6.73-r1",
"ucode-mod-math": "2024.07.22b610860d-r3",
"luci-app-advanced-reboot": "1.0.1-r16",
"kmod-lib-crc32c": "6.6.73-r1",
"kmod-usb-ehci": "6.6.73-r1",
"luci-mod-status": "25.037.6833142f464c",
"luci-app-natmap": "25.037.6833142f464c",
"kmod-nft-nat": "6.6.73-r1",
"kmod-usb2": "6.6.73-r1",
"kmod-usb3": "6.6.73-r1",
"luci-app-firewall": "25.037.6833142f464c",
"luci-app-filemanager": "25.037.6833142f464c",
"libmbedtls": "3.6.2-r1",
"mjpg-streamer-input-file": "1.0.0-r6",
"libmnl": "1.0.5-r1",
"jansson": "2.14-r3",
"mjpg-streamer-input-uvc": "1.0.0-r6",
"odhcp6c": "2024.09.25b6ae9ffa-r1",
"uclient-fetch": "2024.10.2288ae8f20-r1",
"uci": "2025.01.2016ff0bad-r1",
"kmod-fs-ext4": "6.6.73-r1",
"losetup": "2.40.2-r1",
"luci-ssl": "25.037.6833142f464c",
"dropbear": "2024.86-r1",
"libnftnl": "1.2.8-r1",
"rpcd-mod-file": "2024.09.179f4b86e7-r1",
"mtd": "26",
"odhcpd-ipv6only": "2024.05.08a2988231-r1",
"kmod-video-gspca-core": "6.6.73-r1",
"kmod-nf-log": "6.6.73-r1",
"luci-app-package-manager": "25.037.6833142f464c",
"urandom-seed": "3",
"mjpg-streamer-input-http": "1.0.0-r6",
"luci-proto-ppp": "25.037.6833142f464c",
"luci-app-apinger": "25.037.6833142f464c",
"luci-mod-dashboard": "25.037.6833142f464c",
"ppp": "2.5.1-r1",
"luci-mod-admin-full": "25.037.6833142f464c",
"luci-base": "25.037.6833142f464c",
"kmod-leds-gpio": "6.6.73-r1",
"kmod-gpio-button-hotplug": "6.6.73-r5",
"logd": "2024.04.2685f10530-r1",
"mjpg-streamer-output-file": "1.0.0-r6",
"kmod-ata-ahci": "6.6.73-r1",
"kmod-nf-log6": "6.6.73-r1",
"mjpg-streamer-output-zmq": "1.0.0-r6",
"luci-proto-ipv6": "25.037.6833142f464c",
"mjpg-streamer-output-rtsp": "1.0.0-r6",
"luci-app-attendedsysupgrade": "25.037.6833142f464c",
"mjpg-streamer-www": "1.0.0-r6",
"e2fsprogs": "1.47.0-r2",
"kmod-ata-core": "6.6.73-r1",
"kmod-nft-offload": "6.6.73-r1",
"kmod-ppp": "6.6.73-r1",
"luci-app-wol": "25.037.6833142f464c",
"mjpg-streamer-output-http": "1.0.0-r6",
"uhttpd": "2023.06.2534a8a74d-r4",
"kmod-nf-conntrack": "6.6.73-r1",
"kmod-ath10k-ct": "6.6.73.2024.07.30ac71b14d-r2",
"luci-app-mjpg-streamer": "25.037.6833142f464c",
"ca-bundle": "20240203-r1",
"libuclient": "2024.10.2288ae8f20-r1",
"fping": "5.2-r1",
"luci-lib-jsonc": "25.037.6833142f464c",
"nping": "7.95-r1",
"luci-app-snmpd": "25.037.6833142f464c",
"luci": "25.037.6833142f464c",
"kmod-nf-conntrack6": "6.6.73-r1",
"luci-light": "25.037.6833142f464c",
"kmod-usb-ledtrig-usbport": "6.6.73-r1",
"kmod-lib-lzo": "6.6.73-r1",
"rpcd-mod-iwinfo": "2024.09.179f4b86e7-r1",
"luci-mod-network": "25.037.6833142f464c",
"kmod-nft-core": "6.6.73-r1",
"kmod-nls-base": "6.6.73-r1",
"uhttpd-mod-ubus": "2023.06.2534a8a74d-r4",
"luci-app-acl": "25.037.6833142f464c",
"kmod-phy-qcom-ipq806x-usb": "6.6.73-r1",
"luci-app-filebrowser": "1.1.0-r1",
"luci-app-acme": "25.037.6833142f464c",
"urngd": "2023.11.0144365eb1-r1",
"kmod-slhc": "6.6.73-r1",
"luci-lib-chartjs": "25.037.6833142f464c",
"ppp-mod-pppoe": "2.5.1-r1",
"arp-scan": "1.10.0-r2"
},
"profile": "zyxel,nbg6817",
"target": "ipq806x/generic",
"version": "24.10.0",
"diff_packages": true,
"filesystem": "squashfs"
}

STDERR:

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

Building package index...
Downloading http://downloads.openwrt.org/releases/24.10.0/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 http://downloads.openwrt.org/releases/24.10.0/targets/ipq806x/generic/packages/Packages.sig
Signature check passed.
Downloading http://downloads.openwrt.org/releases/24.10.0/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 http://downloads.openwrt.org/releases/24.10.0/packages/arm_cortex-a15_neon-vfpv4/base/Packages.sig
Signature check passed.
Downloading http://downloads.openwrt.org/releases/24.10.0/targets/ipq806x/generic/kmods/6.6.73-1-dd9e13746928f1f8b981cb287862653f/Packages.gz
Updated list of available packages in /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/../../../../builder/dl/openwrt_kmods
Downloading http://downloads.openwrt.org/releases/24.10.0/targets/ipq806x/generic/kmods/6.6.73-1-dd9e13746928f1f8b981cb287862653f/Packages.sig
Signature check passed.
Downloading http://downloads.openwrt.org/releases/24.10.0/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 http://downloads.openwrt.org/releases/24.10.0/packages/arm_cortex-a15_neon-vfpv4/luci/Packages.sig
Signature check passed.
Downloading http://downloads.openwrt.org/releases/24.10.0/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 http://downloads.openwrt.org/releases/24.10.0/packages/arm_cortex-a15_neon-vfpv4/packages/Packages.sig
Signature check passed.
Downloading http://downloads.openwrt.org/releases/24.10.0/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 http://downloads.openwrt.org/releases/24.10.0/packages/arm_cortex-a15_neon-vfpv4/routing/Packages.sig
Signature check passed.
Downloading http://downloads.openwrt.org/releases/24.10.0/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 http://downloads.openwrt.org/releases/24.10.0/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:

• check_data_file_clashes: Package mjpg-streamer-www-simple wants to install file /builder/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/root-ipq806x/www/webcam/index.html
  But that file is already provided by package * mjpg-streamer-www
• opkg_install_cmd: Cannot install package mjpg-streamer-www-simple.
  make[2]: *** [Makefile:234: package_install] Error 255
  make[1]: *** [Makefile:171: _call_manifest] Error 2
  make: *** [Makefile:349: manifest] Error 2

Reproduce the supplied request against https://sysupgrade.openwrt.org for profile zyxel,nbg6817 and inspect the imagebuilder failure at Makefile:234. Trace how the requested mjpg-streamer-www-simple and mjpg-streamer-www packages are passed into the build. Done means the request has a defined, reproducible outcome instead of the reported package-file collision.