iOS app not launching

ios app is not getting launched, getting stuck at splash screen, below is the configuration we are using, also PFA ionic information about the setup we are using for the same.

{
    "name": "app",
    "version": "3.7.2",
    "author": {
        "name": "Team",
        "email": "app@abc.com",
        "url": "https://app.abc.com"
    },
    "description": "App",
    "homepage": "https://app.abc.com",
    "private": true,
    "scripts": {
        "clean": "ionic-app-scripts clean",
        "build": "ionic-app-scripts build --prod",
        "lint": "ionic-app-scripts lint",
        "ionic:build": "ionic-app-scripts build",
        "ionic:serve": "ionic-app-scripts serve",
        "ionic:lint": "npm run lint"
    },
    "dependencies": {
        "@angular/common": "5.0.0",
        "@angular/compiler": "5.0.0",
        "@angular/compiler-cli": "5.0.0",
        "@angular/core": "5.0.0",
        "@angular/forms": "5.0.0",
        "@angular/http": "5.0.0",
        "@angular/platform-browser": "5.0.0",
        "@angular/platform-browser-dynamic": "5.0.0",
        "@ionic-native/core": "^4.3.1",
        "@ionic-native/device": "^4.7.0",
        "@ionic-native/email-composer": "^4.5.3",
        "@ionic-native/keyboard": "^4.5.3",
        "@ionic-native/native-storage": "4.2.1",
        "@ionic-native/network": "^4.4.2",
        "@ionic-native/splash-screen": "^4.3.1",
        "@ionic-native/sqlite": "^4.18.0",
        "@ionic-native/status-bar": "^4.3.1",
        "@ionic/pro": "^1.0.20",
        "@ionic/storage": "^2.2.0",
        "@types/cordova": "0.0.34",
        "@types/lodash": "4.14.74",
        "cordova": "^8.1.2",
        "cordova-android": "^7.1.0",
        "cordova-browser": "5.0.4",
        "cordova-ios": "^4.5.5",
        "cordova-plugin-add-swift-support": "^1.7.2",
        "cordova-plugin-browsertab": "^0.2.0",
        "cordova-plugin-compat": "^1.2.0",
        "cordova-plugin-crosswalk-webview": "^2.4.0",
        "cordova-plugin-device": "^1.1.7",
        "cordova-plugin-email-composer": "^0.8.15",
        "cordova-plugin-ionic": "^3.1.3",
        "cordova-plugin-ionic-keyboard": "^2.1.3",
        "cordova-plugin-nativestorage": "^2.3.2",
        "cordova-plugin-splashscreen": "^5.0.2",
        "cordova-plugin-statusbar": "^2.4.2",
        "cordova-plugin-transport-security": "^0.1.2",
        "cordova-plugin-whitelist": "^1.3.3",
        "cordova-sqlite-storage": "^2.5.2",
        "ionic-angular": "3.9.2",
        "ionic-plugin-keyboard": "^2.2.1",
        "ionic-select-searchable": "^2.7.0",
        "ionicons": "3.0.0",
        "lodash": "^4.17.11",
        "moment": "^2.22.2",
        "ng2-interceptors": "1.3.0-1",
        "phonegap-plugin-barcodescanner": "^7.1.2",
        "powerbi-client": "^2.6.6",
        "rxjs": "5.5.2",
        "socket.io": "^2.0.4",
        "sw-toolbox": "3.6.0",
        "ws": "^3.3.2",
        "zone.js": "0.8.18"
    },
    "devDependencies": {
        "@ionic/app-scripts": "3.2.2",
        "ionic": "^4.0.2",
        "typescript": "~2.4.2"
    },
    "config": {
        "ionic_aot_write_to_disk": true
    },
    "cordova": {
        "platforms": [
            "ios",
            "browser"
        ],
        "plugins": {
            "cordova-plugin-add-swift-support": {},
            "cordova-plugin-device": {},
            "cordova-plugin-email-composer": {},
            "cordova-plugin-nativestorage": {},
            "cordova-plugin-statusbar": {},
            "cordova-plugin-whitelist": {},
            "cordova-sqlite-storage": {},
            "cordova-plugin-ionic-keyboard": {},
            "phonegap-plugin-barcodescanner": {},
            "ionic-plugin-keyboard": {},
            "cordova-plugin-crosswalk-webview": {
                "XWALK_VERSION": "22+",
                "XWALK_LITEVERSION": "xwalk_core_library_canary:17+",
                "XWALK_COMMANDLINE": "--disable-pull-to-refresh-effect",
                "XWALK_MODE": "embedded",
                "XWALK_MULTIPLEAPK": "true"
            },
            "cordova-plugin-transport-security": {},
            "cordova-plugin-ionic": {
                "APP_ID": "c5648932",
                "CHANNEL_NAME": "Production",
                "UPDATE_METHOD": "auto",
                "MAX_STORE": "0",
                "WARN_DEBUG": "false",
                "UPDATE_API": "https://api.ionicjs.com"
            },
            "cordova-plugin-splashscreen": {},
            "cordova-plugin-browsertab": {}
        }
    }
}


When it happens to me, it often the cordova plugin that are missing.
Can you check if they are in the xcode project ?

Try debugin the app on safary, also you can see the xcode log and check if something is wrong, most happens with plugins conflicts.