NPM Run Configuration: cannot execute some scripts from `package.json`

I have a NPM run configuration pointing to an existing package.json (which is not in the root-directory of the project but within a subfolder):

However, executing the run configuration does not work:

npm error code ENOENT
npm error syscall open
npm error path /Users/ev/ide/app/package.json
npm error errno -2
npm error enoent Could not read package.json: Error: ENOENT: no such file or directory, open '/Users/ev/ide/app/package.json'
npm error enoent This is related to npm not being able to find a file.
npm error enoent
npm error A complete log of this run can be found in: /Users/ev/.npm/_logs/2025-08-03T00_54_31_316Z-debug-0.log

The log says that package.json cannot be found in /Users/ev/ide/app/package.json, although it should look in /Users/ev/ide/app/src/main/webui/package.json as specified in the launch configuration. I also tried with absolute path (= /Users/ev/ide/app/src/main/webui/package.json) in the launch configuration - it shows the same error.

• On Mac OS
• Eclipse Version: 2025-03 (4.35.0)
• Wild Web Developer: 1.3.10.202502071606

Commencez par reproduire la configuration d’exécution de NPM avec le package.json dans src/main/webui, en utilisant les versions signalées d’Eclipse et Wild Web Developer. Suivez la manière dont le chemin configuré vers package.json est résolu et vérifiez que l’exécution utilise ce chemin plutôt que la racine du projet ; c’est terminé lorsque les scripts s’exécutent correctement depuis la configuration du sous-dossier.