https://www.update.rocks/blog/fixing-the-python3/

If you are using electron-packager or electron-forge, you might encounter the following error :

 An unhandled rejection has occurred inside Forge:
Error: /var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/electron-packager/darwin-x64/electron-example-darwin-x64-5AYzr2/Electron.app/Contents/Resources/app/node_modules/macos-alias/build/node_gyp_bins/python3: file "../../../../../../../../../../../../../Library/Frameworks/Python.framework/Versions/3.11/bin/python3.11" links out of the package
This error is showing when trying to package an electron application for macOS with Electron Forge. It takes its root in electron-packager and is produced by node-gyp like described in this Github issue.

nodejs/node-gyp#2713

forge.config.js

@@ -143,6 +143,12 @@ let config = {
       return packageJson;
     },
     packageAfterPrune: async (forgeConfig, buildPath, electronVersion, platform, arch) => {
+        if (platform === 'darwin') {
+          console.log("We need to remove the problematic link file on macOS")
+          console.log(`Build path ${buildPath}`)
+          fs.unlinkSync(path.join(buildPath, 'node_modules/macos-alias/build/node_gyp_bins/python3'))
+        },
+
         const npmInstall = spawnSync("npm", ["install", "--omit=dev"], {
           cwd: buildPath,
           stdio: "inherit",