Firebase Cordova Plugin not working

That still doesn’t work for me, using the following plugins:

cordova-plugin-device@2.0.3
cordova-plugin-firebase@2.0.5
cordova-plugin-meteor-webapp@1.7.0
cordova-plugin-splashscreen@5.0.3
cordova-plugin-statusbar@2.4.3

Without changing project.properties I get

The library com.google.android.gms:play-services-measurement-base is being requested by various other libraries at [[17.0.0,17.0.0], [17.1.0,17.1.0]], but resolves to 17.1.0. Disable the plugin and check your dependencies tree using ./gradlew :app:dependencies.

Using the following project.properties (as per your post above):

target=android-27
android.library.reference.1=CordovaLib
android.library.reference.2=app
cordova.gradle.include.1=cordova-plugin-meteor-webapp/dev-build-extras.gradle
cordova.system.library.1=com.squareup.okhttp3:okhttp:3.9.1
cordova.gradle.include.2=cordova-plugin-firebase/dev-build.gradle
cordova.system.library.2=com.google.android.gms:play-services-tagmanager:16+
cordova.system.library.3=com.google.firebase:firebase-core:16.0.8
cordova.system.library.4=com.google.firebase:firebase-messaging:17.5.0
cordova.system.library.5=com.google.firebase:firebase-config:16.4.1
cordova.system.library.6=com.google.firebase:firebase-perf:16.2.4

gives me the errors

{ Error: /home/chris/emecom/.meteor/local/cordova-build/platforms/android/gradlew: Command failed with exit code 1 Error output:
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
/home/chris/.gradle/caches/transforms-1/files-1.1/core-1.0.0.aar/61bf9769beb19feeb6d1112d8a7cfc50/res/values/values.xml:133:5-70: AAPT: error: resource android:attr/fontVariationSettings not found.
    
/home/chris/.gradle/caches/transforms-1/files-1.1/core-1.0.0.aar/61bf9769beb19feeb6d1112d8a7cfc50/res/values/values.xml:133:5-70: AAPT: error: resource android:attr/ttcIndex not found.
    
/home/chris/emecom/.meteor/local/cordova-build/platforms/android/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:95: error: resource android:attr/fontVariationSettings not found.
/home/chris/emecom/.meteor/local/cordova-build/platforms/android/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:95: error: resource android:attr/ttcIndex not found.
error: failed linking references.

According to google android:attr/fontVariationSettings is in android 28.

Do you have any other relevant settings in mobile-config or anything?

Would really like to keep using cordova-plugin-firebase so I can keep using the same api across android and iOS as I was able to before.