Cordova-plugin-firebase: Problem in com.google.firebase.iid.FirebaseInstanceIdService;

Hallo,
Ich verwende Ionic Version 1 und stehe vor dem Problem beim Erstellen des Android-Builds.

:mergeDebugJniLibFolders
:C ordovaLib:processDebugResources
:processDebugResources
:generateDebugSources
:C ordovaLib:generateDebugSources
:C ordovaLib:compileDebugJavaWithJavacHinweis : Einige Eingabedateien verwenden oder überschreiben eine veraltete API.
Hinweis: Neukompilieren mit - Xlint:deprecation für Details.

    :CordovaLib:transformClassesAndResourcesWithPrepareIntermediateJarsForDebug
    :javaPreCompileDebug
    :compileDebugJavaWithJavac/home/juan/Documents/Work/Players/app_players/platforms/android/src/com/gae/scaffolder/plugin/MyFirebaseInstanceIDService.java:6: 
    error: cannot find symbol
    import com.google.firebase.iid.FirebaseInstanceIdService;
                                   ^
       symbol:   class FirebaseInstanceIdService
       location: package com.google.firebase.iid
    /home/juan/Documents/Work/Players/app_players/platforms/android/src/com/gae/scaffolder/plugin/MyFirebaseInstanceIDService.java:11: 
    error: cannot find symbol
    public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
                                                      ^
       symbol: class FirebaseInstanceIdService
    /home/juan/Documents/Work/Players/app_players/platforms/android/src/com/gae/scaffolder/plugin/MyFirebaseInstanceIDService.java:15: 
    error: method does not override or implement a method from a supertype
         <strong i="18">@Override</strong>
         ^
    Note: Some input files use or override a deprecated API.
    Note: Recompile with -Xlint:deprecation for details.
    Note: Some input files use unchecked or unsafe operations.
    Note: Recompile with -Xlint:unchecked for details.
    3 errors
      FAILED

    FAILURE: Build failed with an exception.