Attended Sysupgrade 24.10.0-rc6 to rc7 error

Linksys e8450, using Attended Sysupgrade to go from v24.10.0-rc6 to rc7. Has anyone seen this error:

"Server response: Unsupported profile: linksys,e8450-ubi"

{
"url": "https://sysupgrade.openwrt.org",
"branch": "24.10",
"revision": "r28388-58d0057481",
"efi": null,
"advanced_mode": "1",
"request_hash": "",
"sha256_unsigned": "",
"client": "luci/25.021.3071836b6107",
"packages": {
"luci-proto-wireguard": "25.021.3071836b6107",
"libc": "1.2.5-r4",
"opkg": "2024.10.1638eccbb1-r1",
"wpad-basic-mbedtls": "2024.09.155ace39b0-r2",
"libpthread": "1.2.5-r4",
"kmod-crypto-aead": "6.6.73-r1",
"luci-app-https-dns-proxy": "2023.12.26-r1",
"kmod-lib-crc-ccitt": "6.6.73-r1",
"getrandom": "2024.04.2685f10530-r1",
"kmod-pppoe": "6.6.73-r1",
"kmod-mt7622-firmware": "6.6.73.2025.01.148e4f72b6-r1",
"procd-ujail": "2024.12.2242d39376-r1",
"base-files": "165158d0057481",
"libustream-mbedtls": "2024.07.2899bd3d2b-r1",
"fitblk": "2",
"firewall4": "2024.12.1818fc0ead-r1",
"uboot-envtools": "2024.07-r1",
"dnsmasq": "2.90-r3",
"kmod-mt7615-common": "6.6.73.2025.01.148e4f72b6-r1",
"kmod-crypto-acompress": "6.6.73-r1",
"kmod-mt76-connac": "6.6.73.2025.01.148e4f72b6-r1",
"luci-app-ddns": "25.021.3071836b6107",
"kmod-usb3": "6.6.73-r1",
"libmbedtls": "3.6.2-r1",
"odhcp6c": "2024.09.25b6ae9ffa-r1",
"uci": "2025.01.2016ff0bad-r1",
"luci-ssl": "25.021.3071836b6107",
"dropbear": "2024.86-r1",
"kmod-hwmon-core": "6.6.73-r1",
"mtd": "26",
"odhcpd-ipv6only": "2024.05.08a2988231-r1",
"kmod-crypto-ccm": "6.6.73-r1",
"luci-app-sqm": "25.021.3071836b6107",
"urandom-seed": "3",
"ppp": "2.5.1-r1",
"kmod-leds-gpio": "6.6.73-r1",
"kmod-gpio-button-hotplug": "6.6.73-r5",
"logd": "2024.04.2685f10530-r1",
"kmod-mac80211": "6.6.73.6.12.6-r1",
"luci-app-attendedsysupgrade": "25.021.3071836b6107",
"kmod-ppp": "6.6.73-r1",
"kmod-mt7915-firmware": "6.6.73.2025.01.148e4f72b6-r1",
"kmod-crypto-gcm": "6.6.73-r1",
"ca-bundle": "20240203-r1",
"libuclient": "2024.10.2288ae8f20-r1",
"kmod-crypto-cmac": "6.6.73-r1",
"luci": "25.021.3071836b6107",
"kmod-lib-lzo": "6.6.73-r1",
"kernel": "6.6.7349f3b78722ed2df9df713e744e978eb6-r1",
"iperf3": "3.17.1-r4",
"urngd": "2023.11.01~44365eb1-r1",
"kmod-cfg80211": "6.6.73.6.12.6-r1",
"ppp-mod-pppoe": "2.5.1-r1"
},
"profile": "linksys,e8450-ubi",
"target": "mediatek/mt7622",
"version": "24.10.0-rc6",
"diff_packages": true,
"filesystem": "squashfs"
}

Start by reproducing the supplied request against https://sysupgrade.openwrt.org and tracing where the linksys,e8450-ubi profile is rejected. The payload identifies the 24.10 branch, mediatek/mt7622 target, and rc6-to-rc7 upgrade; done means the cause is identified and the intended request is handled correctly.