I am trying to run the development server for the Ionic 5 version of Moodle Mobile app, but Localhost is refusing the connection, so I get a blank page opened on the browser at http://localhost:8100. The issue is not related to the Chrome browser I am using, since I can successfully run a simple Ionic app at the same url.
Please find below the details , and assist me 
ionic info
Ionic:
Ionic CLI : 6.12.1 (E:\Professionnel\nvm\v14.15.0\node_modules@ionic\cli)
Ionic Framework : @ionic/angular 5.3.4
@angular-devkit/build-angular : 0.1000.8
@angular-devkit/schematics : 10.0.8
@angular/cli : 10.0.8
@ionic/angular-toolkit : 2.3.3
Cordova:
Cordova CLI : 10.0.0
Cordova Platforms : not available
Cordova Plugins : not available
Utility:
cordova-res : not installed
native-run : not installed
System:
Android SDK Tools : 26.1.1 (E:\Professionnel\Android\Sdk)
NodeJS : v14.15.0 (E:\Professionnel\nodejs\node.exe)
npm : 6.14.8
OS : Windows 10
angular.json
{
“$schema”: “./node_modules/@angular/cli/lib/config/schema.json”,
“version”: 1,
“defaultProject”: “app”,
“newProjectRoot”: “projects”,
“projects”: {
“app”: {
“root”: “”,
“sourceRoot”: “src”,
“projectType”: “application”,
“prefix”: “app”,
“schematics”: {},
“architect”: {
“build”: {
“builder”: “@angular-builders/custom-webpack:browser”,
“options”: {
“outputPath”: “www”,
“index”: “src/index.html”,
“main”: “src/main.ts”,
“polyfills”: “src/polyfills.ts”,
“tsConfig”: “tsconfig.app.json”,
“assets”: [
{
“glob”: “/*",
“input”: “src/assets”,
“output”: “assets”
},
{
“glob”: "/.svg",
“input”: “node_modules/ionicons/dist/ionicons/svg”,
“output”: “./svg”
}
],
“styles”: [
{
“input”: “src/theme/variables.scss”
},
{
“input”: “src/global.scss”
}
],
“scripts”: [],
“customWebpackConfig”: {
“path”: “./config/webpack.config.js”
}
},
“configurations”: {
“production”: {
“optimization”: true,
“outputHashing”: “all”,
“sourceMap”: false,
“extractCss”: true,
“namedChunks”: false,
“aot”: true,
“extractLicenses”: true,
“vendorChunk”: false,
“buildOptimizer”: true,
“budgets”: [
{
“type”: “initial”,
“maximumWarning”: “2mb”,
“maximumError”: “5mb”
}
]
},
“ci”: {
“progress”: false
}
}
},
“serve”: {
“builder”: “@angular-builders/custom-webpack:dev-server”,
“options”: {
“browserTarget”: “app:build”
},
“configurations”: {
“production”: {
“browserTarget”: “app:build:production”
},
“ci”: {
“progress”: false
}
}
},
“extract-i18n”: {
“builder”: “@angular-devkit/build-angular:extract-i18n”,
“options”: {
“browserTarget”: “app:build”
}
},
“lint”: {
“builder”: “@angular-eslint/builder:lint”,
“options”: {
“lintFilePatterns”: [
"src/**/.ts”,
“src/app/**/*.html”
]
}
},
“ionic-cordova-build”: {
“builder”: “@ionic/angular-toolkit:cordova-build”,
“options”: {
“browserTarget”: “app:build”
},
“configurations”: {
“production”: {
“browserTarget”: “app:build:production”
}
}
},
“ionic-cordova-serve”: {
“builder”: “@ionic/angular-toolkit:cordova-serve”,
“options”: {
“cordovaBuildTarget”: “app:ionic-cordova-build”,
“devServerTarget”: “app:serve”
},
“configurations”: {
“production”: {
“cordovaBuildTarget”: “app:ionic-cordova-build:production”,
“devServerTarget”: “app:serve:production”
}
}
}
}
}
},
“cli”: {
“defaultCollection”: “@ionic/angular-toolkit”
},
“schematics”: {
“@ionic/angular-toolkit:component”: {
“styleext”: “scss”
},
“@ionic/angular-toolkit:page”: {
“styleext”: “scss”
}
}
}