AUR proton-pass-1.37.1 missing packaging step fails

...etc...
   Compiling dirs-sys v0.4.1
   Compiling rand v0.8.5
   Compiling toml v0.8.23
   Compiling native_messaging v0.2.0
   Compiling base64 v0.21.5
   Compiling futures-core v0.3.31
   Compiling interprocess v2.2.3
   Compiling shared v0.0.0 (/home/musikolo/builds/ramdisk/proton-pass/src/WebClients-proton-pass-1.37.1/applications/pass-desktop/native/shared)
   Compiling ftail v0.3.1
   Compiling dirs v5.0.1
   Compiling base64 v0.22.1
   Compiling host v0.0.0 (/home/musikolo/builds/ramdisk/proton-pass/src/WebClients-proton-pass-1.37.1/applications/pass-desktop/native/host)
    Finished `release` profile [optimized] target(s) in 28.08s
✔ Checking your system
✔ Preparing to package application
✔ Preparing to package application
✔ Running packaging hooks
  ✔ Running generateAssets hook
  ✔ Running prePackage hook
    ✔ [plugin-webpack] Preparing webpack bundles
      ✔ Preparing native dependencies [0.1s]
      ✔ Building webpack bundles [55s]
❯ Packaging application
  ❯ Packaging for x64 on linux
    ✖ Copying files
    ✖ Preparing native dependencies
    ✖ Finalizing package
◼ Running postPackage hook

(node:27104) [DEP0174] DeprecationWarning: Calling promisify on a function that returns a Promise is likely a mistake.
(Use `node --trace-deprecation ...` to show where the warning was created)

==> ERROR: Aborted by user! Exiting...
==> Cleaning up...