Bad message (77)

Xiaomi Mi Router 4A (100M International Edition)
ramips/mt76x8
OpenWrt SNAPSHOT r24054-fe10f97439 / LuCI Master git-23.266.27574-7744ad0
5.15.132

I'm trying to update my router through the auc command and I get the following error:

root@OpenWrt:~# auc
auc/0.3.2-1
Server: https://sysupgrade.openwrt.org
Running: SNAPSHOT r24054-fe10f97439 on ramips/mt76x8 (xiaomi,mi-router-4a-100m-intl)
Available: SNAPSHOT r24067-c354c069b3
Requesting package lists...
libopenssl: 3.0.11-1 -> 3.0.10-1
luci-app-opkg: git-23.267.29502-3e7fe9f -> git-23.009.82915-ec3aac4
base-files: 1542-r24054-fe10f97439 -> 1535-r24002-e3559fb445
netifd: 2023-09-19-7a58b995-2 -> 2023-09-19-7a58b995-1
dnsmasq: 2.89-6 -> 2.89-4
luci-i18n-base-ru: git-23.270.68722-cbe0748 -> git-23.263.30531-f59a194
luci-app-firewall: git-23.267.29502-3e7fe9f -> git-23.212.18089-5d1e581
luci-base: git-23.266.27574-7744ad0 -> git-23.236.53281-98e3743
luci-app-attendedsysupgrade: git-23.265.60357-d7e905e -> git-23.223.40904-987ae1a
luci-mod-network: git-23.264.73274-598b1eb -> git-23.233.29374-a6a428f
Are you sure you want to continue the upgrade process? [N/y] y
Requesting build...................................aircrack-ng - 1.6-3
airmon-ng - 1.6-3
attendedsysupgrade-common - 8
auc - 0.3.2-1
base-files - 1542-r24067-c354c069b3
busybox - 1.36.1-1
ca-bundle - 20230311-1
cgi-io - 2022-08-10-901b0f04-21
dnsmasq - 2.89-6
dropbear - 2022.82-5
ethtool - 6.4-1
firewall4 - 2023-09-01-598d9fbb-1
fstools - 2023-02-28-bfe882d5-1
fwtool - 2019-11-12-8f7fe925-1
getrandom - 2022-08-13-4c7b720b-2
hostapd-common - 2023-09-08-e5ccbfc6-4
htop - 3.2.2-1
iw - 5.19-1
iwinfo - 2023-07-01-ca79f641-1
jansson - 2.14-3
jshn - 2023-05-23-75a3b870-1
jsonfilter - 2018-02-04-c7e938d6-1
kernel - 5.15.132-1-993c4b695a7624047a1e8e8d6bad2b25
kmod-cfg80211 - 5.15.132+6.5-1
kmod-crypto-acompress - 5.15.132-1
kmod-crypto-aead - 5.15.132-1
kmod-crypto-ccm - 5.15.132-1
kmod-crypto-cmac - 5.15.132-1
kmod-crypto-crc32c - 5.15.132-1
kmod-crypto-ctr - 5.15.132-1
kmod-crypto-gcm - 5.15.132-1
kmod-crypto-gf128 - 5.15.132-1
kmod-crypto-ghash - 5.15.132-1
kmod-crypto-hash - 5.15.132-1
kmod-crypto-hmac - 5.15.132-1
kmod-crypto-manager - 5.15.132-1
kmod-crypto-null - 5.15.132-1
kmod-crypto-rng - 5.15.132-1
kmod-crypto-seqiv - 5.15.132-1
kmod-crypto-sha512 - 5.15.132-1
kmod-gpio-button-hotplug - 5.15.132-3
kmod-leds-gpio - 5.15.132-1
kmod-lib-crc-ccitt - 5.15.132-1
kmod-lib-crc32c - 5.15.132-1
kmod-lib-lzo - 5.15.132-1
kmod-mac80211 - 5.15.132+6.5-1
kmod-mt76-core - 5.15.132+2023-09-18-2afc7285-1
kmod-mt7603 - 5.15.132+2023-09-18-2afc7285-1
kmod-mt76x02-common - 5.15.132+2023-09-18-2afc7285-1
kmod-mt76x2 - 5.15.132+2023-09-18-2afc7285-1
kmod-mt76x2-common - 5.15.132+2023-09-18-2afc7285-1
kmod-nf-conntrack - 5.15.132-1
kmod-nf-conntrack6 - 5.15.132-1
kmod-nf-flow - 5.15.132-1
kmod-nf-log - 5.15.132-1
kmod-nf-log6 - 5.15.132-1
kmod-nf-nat - 5.15.132-1
kmod-nf-reject - 5.15.132-1
kmod-nf-reject6 - 5.15.132-1
kmod-nfnetlink - 5.15.132-1
kmod-nft-core - 5.15.132-1
kmod-nft-fib - 5.15.132-1
kmod-nft-nat - 5.15.132-1
kmod-nft-offload - 5.15.132-1
kmod-ppp - 5.15.132-1
kmod-pppoe - 5.15.132-1
kmod-pppox - 5.15.132-1
kmod-slhc - 5.15.132-1
libatomic - 12.3.0-4
libblobmsg-json - 2023-05-23-75a3b870-1
libc - 1.2.4-4
libgcc - 12.3.0-4
libiwinfo-data - 2023-07-01-ca79f641-1
libiwinfo - 2023-07-01-ca79f641-1
libjson-c - 0.16-3
libjson-script - 2023-05-23-75a3b870-1
libkmod - 30-1
liblucihttp-ucode - 2023-03-15-9b5b683f-1
liblucihttp - 2023-03-15-9b5b683f-1
libmbedtls - 2.28.4-1
libmnl - 1.0.5-1
libncurses - 6.4-2
libnftnl - 1.2.6-1
libnl-core - 3.7.0-1
libnl-genl - 3.7.0-1
libnl-tiny - 2023-07-27-bc92a280-1
libopenssl - 3.0.11-1
libpcap - 1.10.4-1
libpci - 3.10.0-1
libpcre - 8.45-5
libpthread - 1.2.4-4
libstdcpp - 12.3.0-4
libubox - 2023-05-23-75a3b870-1
libubus - 2023-06-05-f787c97b-1
libuci - 2023-08-10-5781664d-1
libuclient - 2023-04-13-007d9454-1
libucode - 2023-06-06-c7d84aae-1
libustream-mbedtls - 2023-02-25-498f6e26-1
logd - 2022-08-13-4c7b720b-2
luci - git-23.051.66410-a505bb1
luci-app-attendedsysupgrade - git-23.265.60357-d7e905e
luci-app-firewall - git-23.267.29502-3e7fe9f
luci-app-opkg - git-23.267.29502-3e7fe9f
luci-base - git-23.266.27574-7744ad0
luci-i18n-base-ru - git-23.270.68722-cbe0748
luci-light - git-23.024.33244-34dee82
luci-mod-admin-full - git-19.253.48496-3f93650
luci-mod-network - git-23.264.73274-598b1eb
luci-mod-status - git-23.261.42034-318ef4c
luci-mod-system - git-23.243.32495-038fdd9
luci-proto-ipv6 - git-21.148.48881-79947af
luci-proto-ppp - git-21.158.38888-88b9d84
luci-theme-bootstrap - git-23.249.72972-04d9820
mtd - 26
netifd - 2023-09-19-7a58b995-2
nftables-json - 1.0.8-1
odhcp6c - 2023-05-12-bcd28363-20
odhcpd-ipv6only - 2023-06-24-52112643-1
openwrt-keyring - 2022-03-25-62471e69-2
opkg - 2022-02-24-d038e5b6-2
pciids - 0.359-1
pciutils - 3.10.0-1
ppp - 2.4.9.git-2021-01-04-5
ppp-mod-pppoe - 2.4.9.git-2021-01-04-5
procd - 2023-06-25-2db83655-3
procd-seccomp - 2023-06-25-2db83655-3
procd-ujail - 2023-06-25-2db83655-3
procps-ng - 3.3.16-3
rpcd - 2023-07-01-c07ab2f9-1
rpcd-mod-file - 2023-07-01-c07ab2f9-1
rpcd-mod-iwinfo - 2023-07-01-c07ab2f9-1
rpcd-mod-luci - 20230123-1
rpcd-mod-rpcsys - 2023-07-01-c07ab2f9-1
rpcd-mod-rrdns - 20170710
rpcd-mod-ucode - 2023-07-01-c07ab2f9-1
swconfig - 12
terminfo - 6.4-2
ubox - 2022-08-13-4c7b720b-2
ubus - 2023-06-05-f787c97b-1
ubusd - 2023-06-05-f787c97b-1
uci - 2023-08-10-5781664d-1
uclient-fetch - 2023-04-13-007d9454-1
ucode - 2023-06-06-c7d84aae-1
ucode-mod-fs - 2023-06-06-c7d84aae-1
ucode-mod-html - 1
ucode-mod-math - 2023-06-06-c7d84aae-1
ucode-mod-nl80211 - 2023-06-06-c7d84aae-1
ucode-mod-rtnl - 2023-06-06-c7d84aae-1
ucode-mod-ubus - 2023-06-06-c7d84aae-1
ucode-mod-uci - 2023-06-06-c7d84aae-1
ucode-mod-uloop - 2023-06-06-c7d84aae-1
uhttpd - 2023-06-25-34a8a74d-1
uhttpd-mod-ubus - 2023-06-25-34a8a74d-1
urandom-seed - 3
urngd - 2023-07-25-7aefb47b-1
usign - 2020-05-23-f1f65026-1
wireless-regdb - 2023.09.01-1
wireless-tools - 29-6
wpad-basic-mbedtls - 2023-09-08-e5ccbfc6-4
zlib - 1.2.13-1
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/snapshots/targets/ramips/mt76x8/packages/Packages.gz
Updated list of available packages in /builder/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../builder/dl/openwrt_core
Downloading https://downloads.openwrt.org/snapshots/targets/ramips/mt76x8/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/base/Packages.gz
Updated list of available packages in /builder/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../builder/dl/openwrt_base
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/base/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/snapshots/targets/ramips/mt76x8/kmods/5.15.132-1-993c4b695a7624047a1e8e8d6bad2b25/Packages.gz
Updated list of available packages in /builder/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../builder/dl/openwrt_kmods
Downloading https://downloads.openwrt.org/snapshots/targets/ramips/mt76x8/kmods/5.15.132-1-993c4b695a7624047a1e8e8d6bad2b25/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/luci/Packages.gz
Updated list of available packages in /builder/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../builder/dl/openwrt_luci
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/luci/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/packages/Packages.gz
Updated list of available packages in /builder/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../builder/dl/openwrt_packages
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/routing/Packages.gz
Updated list of available packages in /builder/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../builder/dl/openwrt_routing
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/routing/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/telephony/Packages.gz
Updated list of available packages in /builder/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../builder/dl/openwrt_telephony
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/telephony/Packages.sig
Signature check passed.
Downloading file:packages/Packages
Updated list of available packages in /builder/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../builder/dl/imagebuilder
Downloading file:packages/Packages.sig
Signature check passed.
Collected errors:

• opkg_conf_parse_file: Duplicate src declaration (openwrt_core https://downloads.openwrt.org/snapshots/targets/ramips/mt76x8/packages). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_base https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/base). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_kmods https://downloads.openwrt.org/snapshots/targets/ramips/mt76x8/kmods/5.15.132-1-993c4b695a7624047a1e8e8d6bad2b25). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_luci https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/luci). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_packages https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/packages). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_routing https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/routing). Skipping.
• opkg_conf_parse_file: Duplicate src declaration (openwrt_telephony https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/telephony). Skipping.
  Error: Impossible package selection: wpad-basic-mbedtls version not as requested: 2023-09-08-e5ccbfc6-3 vs. 2023-09-08-e5ccbfc6-4
  Bad message (77)
  root@OpenWrt:~#

Start with the reported auc command and the ASU service request for the Xiaomi Mi Router 4A build. Trace the package-selection failure involving wpad-basic-mbedtls version 2023-09-08-e5ccbfc6-3 versus -4 and determine how it becomes “Bad message (77)”. Done means the failure is explained and the resulting error handling is corrected or clearly documented.