Cannot run on iOS: Command xcrun with arguments simctl install...An error was encountered processing the command (domain=IXUserPresentableErrorDomain, code=1)

Environment
✔ Getting NativeScript components versions information...
✔ Component nativescript has 4.2.4 version and is up to date.
✔ Component tns-core-modules has 4.2.1 version and is up to date.
✔ Component tns-android has 4.2.0 version and is up to date.
✔ Component tns-ios has 4.2.0 version and is up to date.

Dependencies:

"dependencies": {
"@angular/animations": "~6.0.6",
"@angular/common": "~6.0.6",
"@angular/compiler": "~6.0.6",
"@angular/core": "~6.0.6",
"@angular/forms": "~6.0.6",
"@angular/http": "~6.0.6",
"@angular/platform-browser": "~6.0.6",
"@angular/platform-browser-dynamic": "~6.0.6",
"@angular/router": "~6.0.6",
"nativescript-android-utils": "^1.0.2",
"nativescript-angular": "~6.0.6",
"nativescript-drop-down": "^4.0.1",
"nativescript-geolocation": "^4.3.1",
"nativescript-gradient": "^2.0.1",
"nativescript-localstorage": "^2.0.0",
"nativescript-modal-datetimepicker": "^1.1.7",
"nativescript-plugin-firebase": "^7.1.6",
"nativescript-theme-core": "~1.0.4",
"nativescript-toast": "^1.4.6",
"nativescript-ui-sidedrawer": "~4.1.0",
"reflect-metadata": "~0.1.10",
"rxjs": "~6.1.0",
"tns-core-modules": "^4.2.1",
"zone.js": "~0.8.18"
},

Describe the bug
Just finished to configure Firebase for Android to:

• receiving push notification (<-- ok)
• displaying adv (<-- ok)

It works ok

(Nb. To let "nativescript-plugin-firebase" work with "nativescript-geolocation", I had to write this line in the app.gradle:
project.ext {
googlePlayServicesVersion = "15.0.1"
}
)

Now I'm trying to run on iOS (after removing the platform ios from the folder, to let the runner generate it from zero):
tns run ios

But I'm getting this error during the installation:
Unable to apply changes on device: 314852F5-762C-4287-8565-3081236DB5A0. Error is: Command xcrun with arguments simctl install 314852F5-762C-4287-8565-3081236DB5A0 /Users/alessandro/Documents/Progetti/cmi-app-nativescript/meteo-by-centrometeoitaliano/platforms/ios/build/emulator/meteobycentrometeoitaliano.app failed with exit code 1. Error output:
An error was encountered processing the command (domain=IXUserPresentableErrorDomain, code=1):
This app could not be installed at this time.
Underlying error (domain=MIInstallerErrorDomain, code=11):
Bundle at path /Users/alessandro/Library/Developer/CoreSimulator/Devices/314852F5-762C-4287-8565-3081236DB5A0/data/Library/Caches/com.apple.mobile.installd.staging/temp.RswIpe/extracted/meteobycentrometeoitaliano.app has missing or invalid CFBundleExecutable in its Info.plist

Is there some trouble between nativescript and geolocation also for iOS?

Thank you