Error on Cordova platform add ios - "xcode" is not supported

Ionic Framework ionic-v3
1

Hey, I want to move from my PC to a Mac to deploy my App to the iOS-Appstore.
On my Mac I did:

I cloned my files with
git clone

Then installed dependencies with
npm install

And then tried to add platform iOS with
ionic cordova platform add ios

But then I get this error:

Installing "cordova-plugin-filepicker" for ios
Running hook to add iCloud entitlements
Failed to install 'cordova-plugin-filepicker': CordovaError: Using "requireCordovaModule" to load non-cordova module "xcode" is not supported. Instead, add this module to your dependencies and use regular "require" to load it.
    at Context.requireCordovaModule (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/hooks/Context.js:57:15)
    at module.exports (/Users/marie/Basti/SportZens/plugins/cordova-plugin-filepicker/src/ios/hooks/install_entitlements.js:8:23)
    at runScriptViaModuleLoader (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/hooks/HooksRunner.js:181:32)
    at runScript (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/hooks/HooksRunner.js:157:16)
    at /usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/hooks/HooksRunner.js:125:20
    at process._tickCallback (internal/process/next_tick.js:68:7)
Using "requireCordovaModule" to load non-cordova module "xcode" is not supported. Instead, add this module to your dependencies and use regular "require" to load it.
[ERROR] An error occurred while running subprocess cordova.
        
        cordova platform add ios exited with exit code 1.

I tried to install the file-picker-plugin first, but it didn’t help.

Here my ionic info:

Ionic:

   Ionic CLI          : 5.4.2 (/usr/local/lib/node_modules/ionic)
   Ionic Framework    : ionic-angular 3.9.2
   @ionic/app-scripts : 3.2.4

Cordova:

   Cordova CLI       : 9.0.0 (cordova-lib@9.0.1)
   Cordova Platforms : ios 5.0.1
   Cordova Plugins   : cordova-plugin-ionic-keyboard 2.0.5, cordova-plugin-ionic-webview 4.1.2, (and 9 other plugins)

Utility:

   cordova-res : not installed
   native-run  : 0.2.8 

System:

   ios-deploy : 1.9.2
   ios-sim    : 8.0.2
   NodeJS     : v10.16.3 (/usr/local/bin/node)
   npm        : 6.9.0
   OS         : macOS Catalina
   Xcode      : Xcode 10.3 Build version 10G8

Am I doing something wrong with my migration or what is going on?