Error building the firmware image

Although I am able to successfully locally download "https://downloads.openwrt.org/releases/23.05.4/packages/arm_cortex-a15_neon-vfpv4/packages/collectd-mod-memory_5.12.0-49_arm_cortex-a15_neon-vfpv4.ipk", I get the error below when running attended sysupgrade.

This running on Netgear Nighthawk X4S R7800 / OpenWrt 23.05.3 r23809-234f1a2efa / LuCI openwrt-23.05 branch git-24.086.45142-09d5a38

My suspicion is that this error is on the sysupgrade server, but if that is wrong please let me know.

Many thanks.

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/23.05.4/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/23.05.4/targets/ipq806x/generic/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.4/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/23.05.4/packages/arm_cortex-a15_neon-vfpv4/base/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.4/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/23.05.4/packages/arm_cortex-a15_neon-vfpv4/luci/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.4/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/23.05.4/packages/arm_cortex-a15_neon-vfpv4/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.4/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/23.05.4/packages/arm_cortex-a15_neon-vfpv4/routing/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/23.05.4/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/23.05.4/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_download: Failed to download https://downloads.openwrt.org/releases/23.05.4/packages/arm_cortex-a15_neon-vfpv4/packages/collectd-mod-memory_5.12.0-49_arm_cortex-a15_neon-vfpv4.ipk, wget returned 4.

• opkg_download: Check your network settings and connectivity.

• opkg_install_pkg: Failed to download collectd-mod-memory. Perhaps you need to run 'opkg update'?

• opkg_install_cmd: Cannot install package luci-app-statistics.
  make[2]: *** [Makefile:189: package_install] Error 255
  make[1]: *** [Makefile:144: _call_image] Error 2
  make: *** [Makefile:262: image] Error 2

Start by reproducing the attended sysupgrade request for the Netgear Nighthawk X4S R7800 on OpenWrt 23.05.3, focusing on the image-builder package download for collectd-mod-memory. Compare the package URL and package index used during the build with the reported wget error. Done means the requested image builds successfully with luci-app-statistics installed, or the failure is documented with a confirmed cause.