MTC Wireless Router WR1201 32Mb flash Failed to open firmware file No such file or directory

STDERR:

Package list missing or not up-to-date, generating it.

Building package index...
Downloading https://downloads.openwrt.org/releases/22.03.3/targets/ramips/mt7621/packages/Packages.gz
Updated list of available packages in /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../../../../../../../../home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/dl/openwrt_core
Downloading https://downloads.openwrt.org/releases/22.03.3/targets/ramips/mt7621/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/base/Packages.gz
Updated list of available packages in /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../../../../../../../../home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/dl/openwrt_base
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/base/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/luci/Packages.gz
Updated list of available packages in /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../../../../../../../../home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/dl/openwrt_luci
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/luci/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/packages/Packages.gz
Updated list of available packages in /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../../../../../../../../home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/dl/openwrt_packages
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/routing/Packages.gz
Updated list of available packages in /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../../../../../../../../home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/dl/openwrt_routing
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/routing/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/telephony/Packages.gz
Updated list of available packages in /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../../../../../../../../home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/dl/openwrt_telephony
Downloading https://downloads.openwrt.org/releases/22.03.3/packages/mipsel_24kc/telephony/Packages.sig
Signature check passed.
Downloading file:packages/Packages
Updated list of available packages in /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/../../../../../../../../../../../home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/dl/imagebuilder
Downloading file:packages/Packages.sig
Signature check failed.
Remove wrong Signature file.
Collected errors:

• resolve_conffiles: Existing conffile /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/etc/ppp/options is different from the conffile in the new package. The new conffile will be placed at /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/etc/ppp/options-opkg.
• resolve_conffiles: Existing conffile /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/etc/ppp/chap-secrets is different from the conffile in the new package. The new conffile will be placed at /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/etc/ppp/chap-secrets-opkg.
  /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/etc/init.d/nginx: line 12: /usr/bin/nginx-util: No such file or directory
  ./etc/init.d/nginx: line 12: /usr/bin/nginx-util: No such file or directory
  Pseudo file "/dev" exists in source filesystem "/home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/root-ramips/dev".
  Ignoring, exclude it (-e/-ef) to override.
  5265+1 records in
  5265+1 records out
  2695782 bytes (2.7 MB, 2.6 MiB) copied, 0.0241055 s, 112 MB/s
  53050+1 records in
  53050+1 records out
  27161814 bytes (27 MB, 26 MiB) copied, 0.163785 s, 166 MB/s
  padding image to 01c7a000
  padding image to 01c7c000
  padding image to 01c80000
  bash: line 1: 8: Bad file descriptor
  Failed to open firmware file
  sha256sum: /home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7621/tmp/openwrt-22.03.3-046039f0753d-ramips-mt7621-mtc_wr1201-squashfs-sysupgrade.bin: No such file or directory
  cp: cannot stat '/home/aparcar/asu/worker1/cache/22.03.3/ramips/mt7621/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7621/tmp/openwrt-22.03.3-046039f0753d-ramips-mt7621-mtc_wr1201-squashfs-sysupgrade.bin': No such file or directory

Start by reproducing the 22.03.3 ramips/mt7621 build for the MTC WR1201 and inspect the image-generation step around the reported “Bad file descriptor” and “Failed to open firmware file” errors. The logs also show /etc/init.d/nginx invoking a missing /usr/bin/nginx-util. Done means the build produces the expected squashfs-sysupgrade.bin and its checksum and copy steps succeed.