Attended sysupgrade failed on Mikrotik 750gr3

{
"url": "https://sysupgrade.openwrt.org",
"revision": "r20134-5f15225c1e",
"advanced_mode": "1",
"branch": "22.03",
"efi": null,
"profile": "mikrotik,routerboard-750gr3",
"target": "ramips/mt7621",
"version": "23.05.0-rc2",
"packages": [
"base-files",
"bind-host",
"busybox",
"ca-bundle",
"cgi-io",
"curl",
"dnsmasq",
"dropbear",
"firewall4",
"fstools",
"fwtool",
"getrandom",
"hostapd-common",
"iwinfo",
"jansson",
"jshn",
"jsonfilter",
"kernel",
"kmod-crypto-crc32c",
"kmod-crypto-hash",
"kmod-gpio-button-hotplug",
"kmod-leds-gpio",
"kmod-lib-crc-ccitt",
"kmod-lib-crc32c",
"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-sdhci-mt7620",
"kmod-slhc",
"kmod-usb3",
"libblobmsg-json",
"libc",
"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-base",
"luci-i18n-dashboard-en",
"luci-lib-base",
"luci-lib-ip",
"luci-lib-jsonc",
"luci-lib-nixio",
"luci-mod-admin-full",
"luci-mod-dashboard",
"luci-mod-network",
"luci-mod-status",
"luci-mod-system",
"luci-proto-ipv6",
"luci-proto-ppp",
"luci-ssl",
"luci-theme-bootstrap",
"mtd",
"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",
"ubox",
"ubus",
"ubusd",
"uci",
"uclient-fetch",
"ucode",
"ucode-mod-fs",
"ucode-mod-ubus",
"ucode-mod-uci",
"uhttpd",
"uhttpd-mod-ubus",
"urandom-seed",
"urngd",
"usign"
],
"diff_packages": true,
"filesystem": "squashfs",
"client": "luci/git-23.093.42303-58b861d"
}

Start by reproducing the request at https://sysupgrade.openwrt.org using the supplied revision, branch, profile, target, version, and package list, then inspect the returned error and relevant server logs. Done means identifying why the attended sysupgrade fails for the MikroTik RouterBOARD 750Gr3 and confirming a successful upgrade request or a documented limitation.