cordova-plugin-firebasex: Unable to (re-)add android@latest platform

Describe the bug I had to remove my android platform and I’m currently unable to re-add it. At least the 'cordova platform add android@latest` doesn’t complete successfully.

This is the relevant part of my package.json:

  "dependencies": {
    "@angular/animations": "4.4.3",
    "@angular/common": "4.4.3",
    "@angular/compiler": "4.4.3",
    "@angular/compiler-cli": "4.4.3",
    "@angular/core": "4.4.3",
    "@angular/forms": "4.4.3",
    "@angular/http": "4.4.3",
    "@angular/platform-browser": "4.4.3",
    "@angular/platform-browser-dynamic": "4.4.3",
    "@ionic-native/app-version": "4.7.0",
    "@ionic-native/camera": "3.9.2",
    "@ionic-native/contacts": "3.9.2",
    "@ionic-native/core": "3.9.2",
    "@ionic-native/email-composer": "4.5.3",
    "@ionic-native/facebook": "4.4.2",
    "@ionic-native/file": "3.9.2",
    "@ionic-native/firebase": "3.9.2",
    "@ionic-native/geolocation": "3.9.2",
    "@ionic-native/google-plus": "^4.20.0",
    "@ionic-native/in-app-purchase-2": "4.12.0",
    "@ionic-native/keyboard": "3.9.2",
    "@ionic-native/media": "^4.20.0",
    "@ionic-native/media-capture": "3.9.2",
    "@ionic-native/native-audio": "4.5.2",
    "@ionic-native/native-keyboard": "4.6.0",
    "@ionic-native/splash-screen": "3.9.2",
    "@ionic-native/status-bar": "3.9.2",
    "@ionic-native/toast": "^4.20.0",
    "@ionic/storage": "2.0.1",
    "android-versions": "1.3.0",
    "angularfire2": "5.0.0-rc.3",
    "animate.css": "3.6.1",
    "copyfiles": "2.0.0",
    "cordova-android": "8.0.0",
    "cordova-ios": "^4.5.5",
    "cordova-ios-plugin-no-export-compliance": "0.0.5",
    "cordova-plugin-androidx": "1.0.2",
    "cordova-plugin-androidx-adapter": "1.0.2",
    "cordova-plugin-app-version": "^0.1.9",
    "cordova-plugin-camera": "^2.4.1",
    "cordova-plugin-cocoapod-support": "git+https://github.com/dpa99c/cordova-plugin-cocoapods-support.git",
    "cordova-plugin-cocoapod-supportx": "git+https://github.com/dpa99c/cordova-plugin-cocoapods-support.git",
    "cordova-plugin-compat": "^1.2.0",
    "cordova-plugin-contacts": "^2.3.1",
    "cordova-plugin-device": "^1.1.7",
    "cordova-plugin-disable-ios11-statusbar": "^1.0.0",
    "cordova-plugin-email-composer": "^0.8.15",
    "cordova-plugin-facebook4": "^2.1.0",
    "cordova-plugin-file": "^6.0.1",
    "cordova-plugin-firebase": "git+https://github.com/dpa99c/cordova-plugin-firebase.git",
    "cordova-plugin-geolocation": "^2.4.3",
    "cordova-plugin-googleplus": "^7.0.0",
    "cordova-plugin-ionic-webview": "^4.0.1",
    "cordova-plugin-media": "5.0.2",
    "cordova-plugin-media-capture": "1.4.3",
    "cordova-plugin-native-keyboard": "^1.5.4",
    "cordova-plugin-nativeaudio": "^3.0.9",
    "cordova-plugin-purchase": "8.1.1",
    "cordova-plugin-splashscreen": "^4.1.0",
    "cordova-plugin-statusbar": "^2.4.1",
    "cordova-plugin-whitelist": "^1.3.3",
    "cordova-plugin-x-toast": "2.7.2",
    "css-animator": "2.3.1",
    "firebase": "4.5.0",
    "ionic-angular": "3.9.2",
    "ionic-plugin-keyboard": "^2.2.1",
    "ionicons": "3.0.0",
    "moment": "2.18.1",
    "ng2-cordova-oauth": "0.0.8",
    "promise-polyfill": "^8.1.0",
    "rxjs": "5.4.3",
    "sw-toolbox": "3.6.0",
    "underscore": "1.9.1",
    "web-animations-js": "2.3.1",
    "zone.js": "0.8.10"
  },

Console Logs

Installing "cordova-plugin-firebase" for android
Failed to install 'cordova-plugin-firebase': Error: Expected plugin to have ID "cordova-plugin-cocoapod-support" but got "cordova-plugin-cocoapod-supportx".
    at checkID (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/plugman/fetch.js:203:15)
    at /usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/plugman/fetch.js:187:9
    at _fulfilled (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:854:54)
    at self.promiseDispatch.done (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:883:30)
    at Promise.promise.promiseDispatch (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:816:13)
    at /usr/local/lib/node_modules/cordova/node_modules/q/q.js:624:44
    at runSingle (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:137:13)
    at flush (/usr/local/lib/node_modules/cordova/node_modules/q/q.js:125:13)
    at _combinedTickCallback (internal/process/next_tick.js:131:7)
    at process._tickCallback (internal/process/next_tick.js:180:9)
Expected plugin to have ID "cordova-plugin-cocoapod-support" but got "cordova-plugin-cocoapod-supportx".

Plugin Version

cordova-ios-plugin-no-export-compliance 0.0.5 "iOS No Export Compliance"
cordova-plugin-androidx 1.0.2 "cordova-plugin-androidx"
cordova-plugin-androidx-adapter 1.0.2 "cordova-plugin-androidx-adapter"
cordova-plugin-app-version 0.1.9 "AppVersion"
cordova-plugin-camera 2.4.1 "Camera"
cordova-plugin-cocoapod-supportx 1.6.1 "Cordova CocoaPods Dependency Support"
cordova-plugin-compat 1.2.0 "Compat"
cordova-plugin-contacts 2.3.1 "Contacts"
cordova-plugin-device 1.1.7 "Device"
cordova-plugin-disable-ios11-statusbar 1.0.0 "cordova-plugin-disable-ios11-statusbar"
cordova-plugin-email-composer 0.8.15 "EmailComposer"
cordova-plugin-facebook4 2.1.0 "Facebook Connect"
cordova-plugin-file 6.0.1 "File"
cordova-plugin-firebase 2.0.5-custom "Google Firebase Plugin"
cordova-plugin-geolocation 2.4.3 "Geolocation"
cordova-plugin-googleplus 7.0.0 "Google SignIn"
cordova-plugin-ionic-webview 4.0.1 "cordova-plugin-ionic-webview"
cordova-plugin-media 5.0.2 "Media"
cordova-plugin-media-capture 1.4.3 "Capture"
cordova-plugin-native-keyboard 1.5.4 "Native Keyboard"
cordova-plugin-nativeaudio 3.0.9 "Cordova Native Audio"
cordova-plugin-purchase 8.1.1 "Purchase"
cordova-plugin-splashscreen 4.1.0 "Splashscreen"
cordova-plugin-statusbar 2.4.1 "StatusBar"
cordova-plugin-whitelist 1.3.3 "Whitelist"
cordova-plugin-x-toast 2.7.2 "Toast"
ionic-plugin-keyboard 2.2.1 "Keyboard"

Any help would be really much appreciated! If I try to switch back to android 7.x, the build will fail as well (because of dependencies for this plugin, as mentioned here: https://github.com/arnesson/cordova-plugin-firebase/issues/1081#issuecomment-503135862)

That comment was the reason to give your fork a try.