L'argument "chemin" doit être de type chaîne. Objet de type reçu - Angular 7

J'essaye de lancer un test sur mon projet angulaire en tapant

{
 "name": "gui",
 "version": "0.0.0",
 "scripts": {
 "ng": "ng",
 "start": "ng serve",
 "build": "ng build",
 "release": "ng build --prod",
 "test": "ng test",
 "lint": "ng lint",
 "e2e": "ng e2e",
 "version": "git add -A package.json && git commit",
 "postversion": "rm -rf build/temp"
 },
 "private": true,
 "dependencies": {
 "@angular/animations": "^7.2.15",
 "@angular/common": "^7.2.15",
 "@angular/compiler": "^7.2.15",
 "@angular/core": "^7.2.15",
 "@angular/forms": "^7.2.15",
 "@angular/http": "^7.2.15",
 "@angular/platform-browser": "^7.2.15",
 "@angular/platform-browser-dynamic": "^7.2.15",
 "@angular/router": "^7.2.15",
 "@ng-bootstrap/ng-bootstrap": "^3.3.0",
 "core-js": "^2.5.4",
 "font-awesome": "^4.7.0",
 "intl": "^1.2.5",
 "lodash": "^4.17.11",
 "rxjs": "^6.5.2",
 "tslib": "^1.9.0",
 "zone.js": "~0.8.29"
 },
 "devDependencies": {
 "@angular-devkit/build-angular": "~0.13.0",
 "@angular/cli": "~7.3.9",
 "@angular/compiler-cli": "^7.2.15",
 "@angular/language-service": "^7.2.15",
 "@types/jasmine": "~2.8.6",
 "@types/jasminewd2": "~2.0.3",
 "@types/node": "~8.9.4",
 "codelyzer": "~4.2.1",
 "jasmine-core": "^2.99.1",
 "jasmine-spec-reporter": "^4.2.1",
 "karma": "^1.7.1",
 "karma-chrome-launcher": "^2.2.0",
 "karma-coverage-istanbul-reporter": "^2.0.4",
 "karma-jasmine": "^1.1.2",
 "karma-jasmine-html-reporter": "^0.2.2",
 "karma-phantomjs-launcher": "^1.0.4",
 "phantomjs-prebuilt": "^2.1.16",
 "protractor": "~5.3.0",
 "ts-node": "~5.0.1",
 "tslint": "~5.9.1",
 "typescript": "~3.2.4"
 }
}

Avant, je dois installer phantomjs manuellement en utilisant la commande

 // Karma configuration
 // Generated on Wed Oct 24 2018 11:15:29 GMT+0200 (Central European Daylight Time)
 const path = require('path');

 module.exports = function(config) {
 config.set({
 files: [
  'src/**/*.js',
  'src/test/**/*.js'
 ],
 basePath: '',
 frameworks: ['jasmine'],

 preprocessors: {
  '!(test)/**/*.js': 'coverage'
 },

 plugins: [
  require('karma-jasmine'),
  require('karma-chrome-launcher'),
  require('karma-jasmine-html-reporter'),
  require('karma-coverage-istanbul-reporter'),
  require('@angular/cli/plugins/karma')
 ],

 client: {
  clearContext: false
 },

 coverageIstanbulReporter: {
  reports: [ 'html', 'lcovonly', 'text-summary' ],
  dir: path.join(__dirname, 'coverage'),
  skipFilesWithNoCoverage: true,
  fixWebpackSourcePaths: true
 },

 angularCli: {
  environment: 'dev',
  config: '@angular/cli'
 },

 // list of files to exclude
 exclude: [
 ],

 reporters: ['progress', 'kjhtml'], 
 port: 9876,
 colors: true,
 logLevel: config.LOG_INFO,
 autoWatch: false,
 browsers: ['Chrome'],
 singleRun: true,
 concurrency: Infinity
 })
} ;

Mais après ng test --br ... Je reçois cette erreur

23 05 2019 08: 08: 28.194: ERREUR [config]: Erreur dans le fichier de configuration! TypeError [ERR_INVALID_ARG_TYPE]: l'argument "chemin" doit être de type chaîne. Objet de type reçu à validateString (internal / validators.js: 125: 11) à Object.extname (path.js: 1365: 5) à phantomJSExePath (/gui-build/node_modules/karma-phantomjs-launcher/index.js:18:12) à Object. (/gui-build/node_modules/karma-phantomjs-launcher/index.js:107:12) à Module._compile (interne / modules / cjs / loader.js: 701: 30) à Object.Module._extensions..js (interne / modules / cjs / loader.js: 712: 10) à Module.load (interne / modules / cjs / loader.js: 600: 32) à tryModuleLoad (interne / modules / cjs / loader.js: 539: 12) à Function.Module._load (internal / modules / cjs / loader.js: 531: 3) à Module.require (interne / modules / cjs / loader.js: 637: 17) à require (internal / modules / cjs / helpers.js: 22: 18) ....

Comment puis-je résoudre ce problème?

ENVIRONNEMENT: CLI angulaire: 7.3.9 Nœud: 10.15.3 Système d'exploitation: linux x64 Angulaire: 7.2.15

npm install phantomjs-prebuilt@2.1.16 -ignore-scripts

package.json

ng test --browsers=PhantomJS

Comment puis-je résoudre ce problème? Merci d'avance