Error: file ‘/boot/vmlinuz-5.12-X86-64’ not found

Yep, I do

sudo su -
manjaro-chroot -a

Then

rm -f /var/lib/pacman/db.lck
pacman -Syu

Here is all the output I get

manjaro ~]# manjaro-chroot -a
grub-probe: error: cannot find a GRUB drive for /dev/sdb1.  Check your device.map.
grub-probe: error: cannot find a GRUB drive for /dev/sdb1.  Check your device.map.
==> Mounting (ManjaroLinux) [/dev/sda2]
 --> mount: [/mnt]
 --> mount: [/mnt/boot/efi]
[manjaro /]# rm -f /var/lib/pacman/db.lck
[manjaro /]# pacman -Syu
:: Synchronizing package databases...
 core is up to date
 extra is up to date
 community is up to date
 multilib is up to date
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...

Packages (252) firefox-98.0.1-1  gwenview-21.12.3-1  harfbuzz-icu-4.0.1-1  haskell-aeson-1.5.6.0-86  haskell-aeson-pretty-0.8.9-37
               haskell-ansi-terminal-0.11.1-3  haskell-asn1-encoding-0.9.6-156  haskell-asn1-parse-0.9.5-156  haskell-asn1-types-0.3.4-135
               haskell-assoc-1.0.2-126  haskell-async-2.2.4-21  haskell-attoparsec-0.14.4-5  haskell-base-compat-batteries-0.12.0-10
               haskell-base-orphans-0.8.6-13  haskell-base16-bytestring-1.0.2.0-11  haskell-base64-bytestring-1.2.1.0-32  haskell-basement-0.0.13-1
               haskell-bifunctors-5.5.11-51  haskell-blaze-html-0.9.1.2-155  haskell-blaze-markup-0.8.2.8-61  haskell-case-insensitive-1.2.1.0-134
               haskell-citeproc-0.6.0.1-18  haskell-colour-2.3.6-72  haskell-commonmark-0.2.1.1-9  haskell-commonmark-extensions-0.2.2.1-11
               haskell-commonmark-pandoc-0.2.1.2-15  haskell-comonad-5.0.8-130  haskell-conduit-1.3.4.2-34  haskell-conduit-extra-1.3.5-212
               haskell-connection-0.3.1-178  haskell-cryptonite-0.29-49  haskell-data-default-0.7.1.1-205
               haskell-data-default-instances-dlist-0.0.1-218  haskell-data-fix-0.3.2-33  haskell-distributive-0.6.2.1-133  haskell-dlist-1.0-140
               haskell-doclayout-0.3.0.2-58  haskell-doctemplates-0.10.0.1-36  haskell-emojis-0.1.2-5  haskell-glob-0.10.2-21
               haskell-haddock-library-1.10.0-102  haskell-hashable-1.4.0.0-13  haskell-hourglass-0.2.12-177  haskell-hslua-1.3.0.1-102
               haskell-hslua-module-path-0.1.0.1-87  haskell-hslua-module-system-0.2.2.1-158  haskell-hslua-module-text-0.3.0.1-146
               haskell-hsyaml-0.2.1.0-147  haskell-http-client-0.7.10-15  haskell-http-client-tls-0.3.5.3-496  haskell-http-types-0.12.3-214
               haskell-iproute-1.7.12-9  haskell-ipynb-0.1.0.1-283  haskell-jira-wiki-markup-1.4.0-44  haskell-juicypixels-3.3.6-21
               haskell-memory-0.16.0-49  haskell-mono-traversable-1.0.15.3-32  haskell-network-3.1.2.7-9  haskell-network-uri-2.6.4.1-66
               haskell-pandoc-types-1.22-142  haskell-pem-0.2.4-212  haskell-primitive-0.7.3.0-24  haskell-quickcheck-2.14.2-275
               haskell-random-1.2.1-63  haskell-resourcet-1.2.4.3-33  haskell-scientific-0.3.7.0-44  haskell-skylighting-0.11-76
               haskell-skylighting-core-0.11-79  haskell-socks-0.6.1-160  haskell-split-0.2.3.4-176  haskell-splitmix-0.1.0.4-38
               haskell-streaming-commons-0.2.2.4-4  haskell-strict-0.4.0.1-100  haskell-syb-0.7.2.1-113  haskell-tagsoup-0.14.8-157
               haskell-temporary-1.3-363  haskell-texmath-0.12.3.2-17  haskell-text-conversions-0.3.1-114  haskell-text-icu-0.8.0-6
               haskell-th-compat-0.1.3-28  haskell-th-lift-instances-0.1.19-17  haskell-these-1.1.1.1-127  haskell-time-compat-1.9.6.1-28
               haskell-tls-1.5.7-10  haskell-typed-process-0.2.8.0-17  haskell-unicode-collation-0.1.3.1-24  haskell-unicode-transforms-0.4.0-16
               haskell-uniplate-1.6.13-104  haskell-unordered-containers-0.2.16.0-5  haskell-utf8-string-1.0.2-81  haskell-uuid-types-1.0.5-48
               haskell-vector-0.12.3.1-54  haskell-vector-algorithms-0.8.0.4-96  haskell-x509-1.7.5-192  haskell-x509-store-1.6.9-7
               haskell-x509-system-1.6.7-10  haskell-x509-validation-1.6.12-12  haskell-xml-conduit-1.9.1.1-87  haskell-zip-archive-0.4.1-163
               haskell-zlib-0.6.2.3-64  hplip-1:3.22.2-1  imagemagick-7.1.0.27-1  inkscape-1.1.2-2  k3b-1:21.12.3-2  kaccounts-integration-21.12.3-1
               kaccounts-providers-21.12.3-1  kactivitymanagerd-5.24.3-1  kamera-21.12.3-1  kate-21.12.3-1  kcalc-21.12.3-1  kde-cli-tools-5.24.3-1
               kde-gtk-config-5.24.3-1  kdeconnect-21.12.3-1  kdegraphics-thumbnailers-21.12.3-1  kdenetwork-filesharing-21.12.3-1
               kdeplasma-addons-5.24.3-1  keditbookmarks-21.12.3-1  kfind-21.12.3-1  kgamma5-5.24.3-1  kget-21.12.3-2  khelpcenter-21.12.3-1
               khotkeys-5.24.3-1  kinfocenter-5.24.3-1  kmenuedit-5.24.3-1  konsole-21.12.3-1  konversation-21.12.3-1  kpmcore-21.12.3-1
               kscreen-5.24.3-1  kscreenlocker-5.24.3-1  ksshaskpass-5.24.3-1  ksystemlog-21.12.3-1  ksystemstats-5.24.3-1  kwallet-pam-5.24.3-1
               kwalletmanager-21.12.3-1  kwayland-integration-5.24.3-1  kwayland-server-5.24.3-1  kwin-5.24.3-1  kwrited-5.24.3-1
               layer-shell-qt-5.24.3-1  lib32-brotli-1.0.9-4  lib32-curl-7.82.0-1  lib32-dbus-1.14.0-1  lib32-expat-2.4.7-1  lib32-gcc-libs-11.2.0-4
               lib32-libpsl-0.21.1-2  lib32-libtirpc-1.3.2-2  lib32-libva-mesa-driver-21.3.7-2  lib32-libvdpau-1.4-2  lib32-mesa-21.3.7-2
               lib32-mesa-vdpau-21.3.7-2  lib32-nss-3.76-1  lib32-sqlite-3.38.0-1  lib32-systemd-250.4-1  lib32-vulkan-intel-21.3.7-2
               lib32-vulkan-radeon-21.3.7-2  libcurl-gnutls-7.82.0-1  libebml-1.4.2-2  libgit2-1:1.4.2-1  libgphoto2-2.5.29-1  libimagequant-2.17.0-3
               libkcddb-21.12.3-1  libkexiv2-21.12.3-1  libksane-21.12.3-1  libkscreen-5.24.3-1  libksysguard-5.24.3-1  libktorrent-21.12.3-1
               liblouis-3.21.0-1  libmatroska-1.6.3-2  libnfs-5.0.1-2  libnm-1.36.2-1  libopenshot-0.2.7-9  libplacebo-4.192.1-2
               libreoffice-still-7.2.6-1  libva-intel-driver-2.4.1-2  libva-mesa-driver-21.3.7-2  libva-vdpau-driver-0.7.4-6
               linux-firmware-20220309.cd01f85-1  linux-firmware-whence-20220309.cd01f85-1  linux510-5.10.105-1  manjaro-printer-20220314-1
               manjaro-release-21.2.5-1  manjaro-settings-manager-0.5.7-2  manjaro-settings-manager-kcm-0.5.7-2
               manjaro-settings-manager-knotifier-0.5.7-2  mesa-vdpau-21.3.7-2  milou-5.24.3-1  mpv-1:0.34.1-4  networkmanager-1.36.2-1
               networkmanager-openconnect-1.2.8-1  networkmanager-openvpn-1.8.18-1  networkmanager-pptp-1.2.10-1  networkmanager-vpnc-1.2.8-1
               node-gyp-9.0.0-1  npm-8.5.4-1  obsidian-0.13.31-1  okular-21.12.3-1  oniguruma-6.9.7.1-2  oxygen-5.24.3-1  pandoc-2.14.2-44
               partitionmanager-21.12.3-1  patchelf-0.14.5-1  perl-alien-build-2.47-1  plasma-desktop-5.24.3-1  plasma-integration-5.24.3-1
               plasma-nm-5.24.3-1  plasma-pa-5.24.3-1  plasma-sdk-5.24.3-1  plasma-systemmonitor-5.24.3-1  plasma-workspace-5.24.3-1
               plasma-workspace-wallpapers-5.24.3-1  polkit-kde-agent-5.24.3-1  powerdevil-5.24.3-1  print-manager-21.12.3-1  pyside6-6.2.3-3
               python-manjaro-sdk-0.7-1  python-more-itertools-8.12.0-1  python-numpy-1.22.3-1  python-pycurl-7.45.0-1  python-pyparsing-3.0.1-1
               python-zstandard-0.17.0-1  qgpgme-1.17.1-1  qpdf-10.6.2-3  qt5-imageformats-5.15.3+kde+r0-1  qt5-script-5.15.8-4
               qt5-sensors-5.15.3+kde+r0-1  qt5-tools-5.15.3+kde+r1-1  qt5-virtualkeyboard-5.15.3+kde+r3-1  qt5-webkit-5.212.0alpha4-12
               qt5-xmlpatterns-5.15.3+kde+r0-1  r-4.1.3-1  sddm-kcm-5.24.3-1  shaderc-2022.1-2  shiboken6-6.2.3-3  skanlite-21.12.3-1
               smartmontools-7.3-1  snapd-2.54.4-1  spectacle-21.12.3-1  spirv-tools-2022.1-1  sudo-1.9.10-1  systemd-sysvcompat-250.4-1
               systemsettings-5.24.3-1  thunderbird-91.7.0-1  udiskie-2.4.2-1  usb_modeswitch-2.6.1-3  vulkan-headers-1:1.3.207-1
               vulkan-intel-21.3.7-2  vulkan-radeon-21.3.7-2  vulkan-tools-1.2.203-2  web-installer-url-handler-2.3-1  wireless-regdb-2022.02.18-1
               xxhash-0.8.1-2  yakuake-21.12.3-1

Total Installed Size:  3013.88 MiB
Net Upgrade Size:        52.43 MiB

:: Proceed with installation? [Y/n] Y
(252/252) checking keys in keyring                                                         [####################################################] 100%
(252/252) checking package integrity                                                       [####################################################] 100%
(252/252) loading package files                                                            [####################################################] 100%
(252/252) checking for file conflicts                                                      [####################################################] 100%
error: failed to commit transaction (conflicting files)
imagemagick: /usr/bin/Magick++-config exists in filesystem
imagemagick: /usr/bin/MagickCore-config exists in filesystem
imagemagick: /usr/bin/MagickWand-config exists in filesystem
imagemagick: /usr/bin/animate exists in filesystem
imagemagick: /usr/bin/compare exists in filesystem

And to answer your question, I unfortunately do not have it.