Error starting electron app on new projects (capacitor 6) : UnhandledPromiseRejection on /live-runner.js

[hatsantos]

Describe the bug
When starting a new ionic app and adding a electron capacitor plataform an erro happens when trying to start the electron app.
Yesterday Capacitor 6 was released. I don't know if it related to this new version.

npx cap open @capacitor-community/electron

ℹ Opening Electron platform: start 🚀
ℹ Opening Electron platform: building electron app
⠸ Opening Electron platform: running electron appError: undefined
✖ Opening Electron platform:
node:internal/process/promises:289
            triggerUncaughtException(err, true /* fromPromise */);
            ^

[UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "
> [email protected] electron:start-live
> node ./live-runner.js

node:internal/child_process:421
    throw new ErrnoException(err, 'spawn');
          ^

Error: spawn EINVAL
    at ChildProcess.spawn (node:internal/child_process:421:11)
    at Object.spawn (node:child_process:761:9)
    at D:\TesteXPTO\electron\live-runner.js:19:24
    at new Promise (<anonymous>)
    at runBuild (D:\TesteXPTO\electron\live-runner.js:18:10)
    at D:\TesteXPTO\electron\live-runner.js:72:9
    at Object.<anonymous> (D:\TesteXPTO\electron\live-runner.js:75:3)
    at Module._compile (node:internal/modules/cjs/loader:1369:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1427:10)
    at Module.load (node:internal/modules/cjs/loader:1206:32) {
  errno: -4071,
  code: 'EINVAL',
  syscall: 'spawn'
}

Node.js v20.12.2
".] {
  code: 'ERR_UNHANDLED_REJECTION'
}

Node.js v20.12.2

To Reproduce
ionic start > angular > XPTOapp > standalone
ionic build --prod
npm i @capacitor-community/electron
npx cap add @capacitor-community/electron
npx cap open @capacitor-community/electron

Expected behavior
Build should happen and app should start.

Screenshots

Desktop (please complete the following information):

 Version 22H2
 
 Ionic:
   Ionic CLI                     : 7.2.0 (C:\Users\hsantos\AppData\Local\pnpm\global\5\.pnpm\@[email protected]\node_modules\@ionic\cli)        
   Ionic Framework               : @ionic/angular 7.8.4
   @angular-devkit/build-angular : 17.3.4
   @angular-devkit/schematics    : 17.3.4
   @angular/cli                  : 17.3.4
   @ionic/angular-toolkit        : 11.0.1

Capacitor:
   Capacitor CLI      : 6.0.0
   @capacitor/android : 6.0.0
   @capacitor/core    : 6.0.0
   @capacitor/ios     : not installed

Utility:
   cordova-res : not installed globally
   native-run  : 2.0.1

System:
   NodeJS : v20.12.2 (C:\Program Files\nodejs\node.exe)
   npm    : 10.5.0

[hatsantos]

I think it's related with the node version... The latest LTS seems to crash the build.

[satheshsat]

I am also getting same error. My node version is Node.js v18.20.2

[jduerr]

Experiencing the exact same error.
Did anybody find a working solution?

[ethrythedev]

Same error, node v20.12.2

[hatsantos]

I had to downgrade to node version 18.19.0 to make it work.

[TruongHaiDang]

I had to downgrade to node version 18.19.0 to make it work.

Thanks you. It work for me.

[Frooger]

you can fix it by change line 19 in live-runner.js
from
let tempChild = cp.spawn(npmCmd, ['run', 'build']);
to
let tempChild = cp.spawn(npmCmd, ['run', 'build'], {shell: true});

https://nodejs.org/en/blog/vulnerability/april-2024-security-releases-2