Webdriverio: wdio.conf.ejs no creado

El problema

Experimenté exactamente el mismo problema que el # 1568 que se cerró en ese entonces pero aztack lo informó nuevamente.

Cuando trato de configurar Webdriver IO después de instalarlo, aparece un error justo después de pasar por la interfaz de preguntas:

=========================
WDIO Configuration Helper
=========================

? Where do you want to execute your tests? On my local machine
? Which framework do you want to use? mocha
? Shall I install the framework adapter for you? Yes
? Where are your test specs located? ./test/*.js
? Which reporter do you want to use?  spec - https://github.com/webdriverio/wdio-spec-reporter
? Shall I install the reporter library for you? Yes
? Do you want to add a service to your test setup?  selenium-standalone - https://github.com/webdriverio/wdio-selenium-standalone
-service
? Shall I install the services for you? Yes
? Level of logging verbosity command
? In which directory should screenshots gets saved if a command fails? ./errorShots/
? What is the base url? http://localhost

Installing wdio packages:

Packages installed successfully, creating configuration file...
fs.js:651
  return binding.open(pathModule._makeLong(path), stringToFlags(flags), mode);
                 ^

Error: ENOENT: no such file or directory, open '/Users/sarahdayan/Projets/communitytalk.com/node_modules/webdriverio/build/lib/helpers/wdio.conf.ejs'
    at Object.fs.openSync (fs.js:651:18)
    at Object.fs.readFileSync (fs.js:553:33)
    at renderConfigurationFile (/Users/sarahdayan/Projets/communitytalk.com/node_modules/webdriverio/build/lib/cli.js:292:28)
    at /Users/sarahdayan/Projets/communitytalk.com/node_modules/webdriverio/build/lib/cli.js:282:17
    at /Users/sarahdayan/Projets/communitytalk.com/node_modules/npm-install-package/index.js:31:5
    at ChildProcess.exithandler (child_process.js:262:7)
    at emitTwo (events.js:125:13)
    at ChildProcess.emit (events.js:213:7)
    at maybeClose (internal/child_process.js:897:16)
    at Socket.stream.socket.on (internal/child_process.js:340:11)
npm ERR! Test failed.  See above for more details.

Ambiente

• Versión de WebdriverIO: 4.8.0
• Versión de Node.js: 8.1.3
• Modo autónomo o wdio testrunner : autónomo

Detalle

Me las arreglé para resolver el problema diciendo que no a la instalación del marco y omitiendo la selección de un reportero y agregando un servicio a mi configuración de prueba:

? Shall I install the framework adapter for you? No
? Which reporter do you want to use?
? Do you want to add a service to your test setup?

Luego los instalé y edité el wdio.conf.js manualmente, pero eso no es lo ideal.

¡Gracias por adelantado!