Can someone help me?

when I build my ionic application, this error results:

ionic cordova build android --prod

[WARN] Detected locally installed Ionic CLI, but it's too old--using global CLI.
[WARN] Detected @ionic/cli-plugin-ionic-angular in your package.json.

       As of CLI 3.8, it is no longer needed. You can uninstall it:

       npm uninstall -D @ionic/cli-plugin-ionic-angular


Running app-scripts build: --platform android --target cordova
[19:39:52]  build dev started ...
[19:39:52]  clean started ...
[19:39:52]  clean finished in 2 ms
[19:39:52]  copy started ...
[19:39:52]  transpile started ...
[19:39:54]  transpile finished in 2.91 s
[19:39:54]  preprocess started ...
[19:39:54]  deeplinks started ...
[19:39:55]  deeplinks finished in 55 ms
[19:39:55]  preprocess finished in 56 ms
[19:39:55]  webpack started ...
[19:39:55]  copy finished in 3.11 s
[19:40:00]  webpack finished in 5.09 s
[19:40:00]  sass started ...
[19:40:01]  sass finished in 1.05 s
[19:40:01]  postprocess started ...
[19:40:01]  removed unused font files
[19:40:01]  postprocess finished in 5 ms
[19:40:01]  lint started ...
[19:40:01]  build dev finished in 9.17 s
> cordova build android

You have been opted out of telemetry. To change this, run: cordova telemetry on.
ANDROID_HOME=C:\Users\Jaylton\AppData\Local\Android\sdk
JAVA_HOME=C:\Program Files\java\jdk1.8.0_131
[19:40:03]  tslint: C:/projects/restapi/src/providers/events/events.ts, line: 33                                         
            'array' is declared but never used.

      L32:    resolve(result.json());
      L33:    var array = JSON.parse(result._body);
      L34:  },

[19:40:03]  tslint: C:/projects/restapi/src/providers/events/events.ts, line: 49                                         
            'array' is declared but never used.

      L48:    resolve(result.json());
      L49:    var array = JSON.parse(result._body);
      L50:  },

[19:40:03]  tslint: C:/projects/restapi/src/providers/events/events.ts, line: 64                                         
            'array' is declared but never used.

      L63:    resolve(result.json());
      L64:    var array = JSON.parse(result._body);
      L65:  },

[19:40:03]  tslint: C:/projects/restapi/src/providers/events/events.ts, line: 79                                         
            'array' is declared but never used.

      L78:    resolve(result.json());
      L79:    var array = JSON.parse(result._body);
      L80:  },

[19:40:03]  tslint: C:/projects/restapi/src/providers/events/events.ts, line: 11                                         1
            'array' is declared but never used.

     L110:    resolve(result.json());
     L111:    var array = JSON.parse(result._body);
     L112:  },

[19:40:03]  tslint: C:/projects/restapi/src/pages/other-field/other-field.ts, li                                         ne: 48
            Duplicate variable: 'i'

      L47:  this.fields2.push(event);
      L48:  for (var i = 0; i < event.opcoes.length; i++) {
      L49:    var opcao = event.opcoes[i];

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-detail/event-detail.ts,                                          line: 31
            Duplicate variable: 'dd'

      L31:      var dd = this.event.dthr_evento;
      L32:      var rd = dd.split(" ");

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-detail/event-detail.ts,                                          line: 32
            Duplicate variable: 'rd'

      L31:  var dd = this.event.dthr_evento;
      L32:  var rd = dd.split(" ");
      L33:  rd = rd[0].split("-");

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-detail/event-detail.ts,                                          line: 23
            Property 'eventProvider' is declared but never used.

      L23:  owser: InAppBrowser, private toast: ToastController, private eventPr                                         ovider: EventsProvider, public navCtrl:
      L24:      this.event = this.navParams.data.event[0];

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-list/event-list.ts, line                                         : 98
            Duplicate variable: 'arr'

      L97:  event.dthr_evento = arr[0].split('-').reverse().join('/');
      L98:  var arr = event.dt_limite_inscricao.split(' ');
      L99:  event.dt_limite_inscricao = arr[0].split('-').reverse().join('/');

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-list/event-list.ts, line                                         : 37
            'disconnectSubscription' is declared but never used.

      L36:  constructor(public network: Network, public navCtrl: NavController,                                          public navParams: NavParams, private geo: Geolocation, private platform: Platfor                                         m, private toast: ToastController, private eventProvider: EventsProvider) {
      L37:    let disconnectSubscription = this.network.onDisconnect().subscribe                                         (() => {
      L38:      this.net = true;

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-list/event-list.ts, line                                         : 40
            'connectSubscription' is declared but never used.

      L39:  });
      L40:  let connectSubscription = this.network.onConnect().subscribe(() => {
      L41:    this.events = [];

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-list/event-list.ts, line                                         : 5
            'Input' is declared but never used.

       L4:  import { NavController, NavParams, ToastController, Platform, Conten                                         t, Searchbar} from 'ionic-angular';
       L5:  import { ViewChild, Input } from '@angular/core';
       L6:  import { LoginPage } from '../login/login';

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-list/event-list.ts, line                                         : 6
            All imports are unused.

       L5:  import { ViewChild, Input } from '@angular/core';
       L6:  import { LoginPage } from '../login/login';
       L7:  import { EventDetailPage } from '../event-detail/event-detail';

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-list/event-list.ts, line                                         : 8
            All imports are unused.

       L7:  import { EventDetailPage } from '../event-detail/event-detail';
       L8:  import { SearchPipe } from '../../pipes/search/search';
       L9:  import { Network } from '@ionic-native/network';

[19:40:03]  tslint: C:/projects/restapi/src/pages/user-edit/user-edit.ts, line:                                          5
            All imports are unused.

       L4:  import { UserPerfilPage } from '../user-perfil/user-perfil';
       L5:  import { TabsPage } from '../tabs/tabs';

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-user/event-user.ts, line                                         : 18
            Property 'platform' is declared but never used.

      L18:  Ctrl: NavController, public navParams: NavParams, private platform:                                          Platform, private toast: ToastController
      L19:      let disconnectSubscription = this.network.onDisconnect().subscri                                         be(() => {

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-user/event-user.ts, line                                         : 19
            'disconnectSubscription' is declared but never used.

      L18:  constructor(private network: Network, public navCtrl: NavController,                                          public navParams: NavParams, private platform: Platform, private toast: ToastCo                                         ntroller, private eventProvider: EventsProvider) {
      L19:    let disconnectSubscription = this.network.onDisconnect().subscribe                                         (() => {
      L20:      this.net = true;

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-user/event-user.ts, line                                         : 22
            'connectSubscription' is declared but never used.

      L21:  });
      L22:  let connectSubscription = this.network.onConnect().subscribe(() => {
      L23:    this.events = [];

[19:40:03]  tslint: C:/projects/restapi/src/pages/event-user/event-user.ts, line                                         : 3
            'InfiniteScroll' is declared but never used.

       L2:  import { Component } from '@angular/core';
       L3:  import { NavController, NavParams, ToastController, InfiniteScroll,                                          Platform } from 'ionic-angular';
       L4:  import { EventUserDetailPage } from '../event-user-detail/event-user                                         -detail';

[19:40:03]  tslint: C:/projects/restapi/src/pages/user-perfil/user-perfil.ts, li                                         ne: 7
            All imports are unused.

       L6:  import { UserEditPage } from '../user-edit/user-edit';
       L7:  import { UserDetailPage } from '../user-detail/user-detail';
       L8:  import { UsersProvider } from './../../providers/users/users';

[19:40:03]  tslint: C:/projects/restapi/src/pages/results/results.ts, line: 71
            Duplicate variable: 'arr'

      L70:  event.dthr_evento = arr[0].split('-').reverse().join('/');
      L71:  var arr = event.dt_limite_inscricao.split(' ');
      L72:  event.dt_limite_inscricao = arr[0].split('-').reverse().join('/');

[19:40:03]  tslint: C:/projects/restapi/src/pages/results/results.ts, line: 29
            Property 'platform' is declared but never used.

      L29:  Ctrl: NavController, public navParams: NavParams, private platform:                                          Platform, private toast: ToastController
      L30:      let disconnectSubscription = this.network.onDisconnect().subscri                                         be(() => {

[19:40:03]  tslint: C:/projects/restapi/src/pages/results/results.ts, line: 30
            'disconnectSubscription' is declared but never used.

      L29:  constructor(public network: Network, public navCtrl: NavController,                                          public navParams: NavParams, private platform: Platform, private toast: ToastCon                                         troller, private eventProvider: EventsProvider) {
      L30:    let disconnectSubscription = this.network.onDisconnect().subscribe                                         (() => {
      L31:      this.net = true;

[19:40:03]  tslint: C:/projects/restapi/src/pages/results/results.ts, line: 33
            'connectSubscription' is declared but never used.

      L32:  });
      L33:  let connectSubscription = this.network.onConnect().subscribe(() => {
      L34:    this.results = [];

[19:40:03]  tslint: C:/projects/restapi/src/pages/results/results.ts, line: 3
            'InfiniteScroll' is declared but never used.

       L2:  import { Component } from '@angular/core';
       L3:  import { NavController, NavParams, ToastController, InfiniteScroll,                                          Platform, Content, Searchbar } from 'ion
       L4:  import { ViewChild } from '@angular/core';

[19:40:03]  tslint: C:/projects/restapi/src/pages/results/results.ts, line: 5
            All imports are unused.

       L4:  import { ViewChild } from '@angular/core';
       L5:  import { LoginPage } from '../login/login';
       L6:  import { EventDetailPage } from '../event-detail/event-detail';

[19:40:03]  tslint: C:/projects/restapi/src/pages/results/results.ts, line: 7
            All imports are unused.

       L6:  import { EventDetailPage } from '../event-detail/event-detail';
       L7:  import { SearchPipe } from '../../pipes/search/search';
       L8:  import { Network } from '@ionic-native/network';

[19:40:03]  tslint: C:/projects/restapi/src/pages/tabs/tabs.ts, line: 22
            Property 'toast' is declared but never used.

      L22:  rtController, public navCtrl: NavController, public navParams: NavPa                                         rams, private toast: ToastController) {
      L23:      if (this.navParams.data.res) {

[19:40:03]  tslint: C:/projects/restapi/src/pages/login/login.ts, line: 24
            'disconnectSubscription' is declared but never used.

      L24:  let disconnectSubscription = this.network.onDisconnect().subscribe((                                         ) => {
      L25:    this.toast.create({ message: 'Você está sem conexão com internet.                                          Por favor, conecte seu dispositivo a uma rede.', position: 'botton', duration: 3                                         000 }).present();

[19:40:03]  tslint: C:/projects/restapi/src/pages/load/load.ts, line: 13
            Property 'loadingCtrl' is declared but never used.

      L13:    constructor(private loadingCtrl: LoadingController, public navCtrl                                         : NavController, public navParams: NavPa

[19:40:03]  tslint: C:/projects/restapi/src/app/app.component.ts, line: 16
            Property 'fcm' is declared but never used.

      L16:    constructor(private fcm: FCM, platform: Platform, statusBar: Statu                                         sBar,public push: Push, splashScreen: Sp
      L17:      platform.ready().then(() => {

[19:40:03]  tslint: C:/projects/restapi/src/pipes/pipes.module.ts, line: 2
            All imports are unused.

       L1:  import { NgModule } from '@angular/core';
       L2:  import { SearchPipe } from './search/search';
       L3:  @NgModule({

[19:40:03]  lint finished in 2.80 s
Subproject Path: CordovaLib
google-services plugin could not detect any version for com.google.android.gms o                                         r com.google.firebase, default version: 9.0.0 will be used.
please apply google-services plugin at the bottom of the build file.
Configuration 'compile' in project ':' is deprecated. Use 'implementation' inste                                         ad.
The Task.leftShift(Closure) method has been deprecated and is scheduled to be re                                         moved in Gradle 5.0. Please use Task.doLast(Action) instead.
        at build_3bz77l6uoddnb3s6juyfiip5u.run(C:\projects\restapi\platforms\and                                         roid\build.gradle:142)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollec                                         tion)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollec                                         tion)
publishNonDefault is deprecated and has no effect anymore. All variants are now                                          published.
:preBuild UP-TO-DATE
:CordovaLib:preBuild UP-TO-DATE
:CordovaLib:preDebugBuild UP-TO-DATE
:CordovaLib:checkDebugManifest UP-TO-DATE
:CordovaLib:processDebugManifest UP-TO-DATE

:preDebugBuild
 UP-TO-DATE
:CordovaLib:compileDebugAidl UP-TO-DATE
:compileDebugAidl
 UP-TO-DATE
:CordovaLib:packageDebugRenderscript
 NO-SOURCE
:compileDebugRenderscript UP-TO-DATE
:checkDebugManifest UP-TO-DATE
:generateDebugBuildConfig UP-TO-DATE
:prepareLintJar UP-TO-DATE
:generateDebugResValues UP-TO-DATE
:generateDebugResources UP-TO-DATE
:processDebugGoogleServices

Parsing json file: C:\projects\restapi\platforms\android\google-services.json
:CordovaLib:compileDebugRenderscript
 UP-TO-DATE
:CordovaLib:generateDebugResValues UP-TO-DATE
:CordovaLib:generateDebugResources UP-TO-DATE
:CordovaLib:packageDebugResources UP-TO-DATE
:mergeDebugResources
 UP-TO-DATE
:createDebugCompatibleScreenManifests UP-TO-DATE
:processDebugManifest
 UP-TO-DATE
:splitsDiscoveryTaskDebug UP-TO-DATE
:CordovaLib:platformAttrExtractor UP-TO-DATE
:CordovaLib:processDebugResources UP-TO-DATE
:processDebugResources
 UP-TO-DATE
:generateDebugSources UP-TO-DATE
:CordovaLib:generateDebugBuildConfig UP-TO-DATE
:CordovaLib:prepareLintJar UP-TO-DATE
:CordovaLib:generateDebugSources UP-TO-DATE
:CordovaLib:javaPreCompileDebug UP-TO-DATE
:CordovaLib:compileDebugJavaWithJavac UP-TO-DATE
:CordovaLib:processDebugJavaRes NO-SOURCE
:CordovaLib:transformClassesAndResourcesWithPrepareIntermediateJarsForDebug
 UP-TO-DATE
:javaPreCompileDebug UP-TO-DATE
:compileDebugJavaWithJavac
error: error reading C:\Users\Jaylton\.gradle\caches\transforms-1\files-1.1\fire                                         base-analytics-impl-16.1.1.aar\48ca2deb4d144e3deb97bae993965054\jars\classes.jar                                         ; zip file is empty
error: error reading C:\Users\Jaylton\.gradle\caches\transforms-1\files-1.1\fire                                         base-analytics-impl-16.1.1.aar\48ca2deb4d144e3deb97bae993965054\jars\classes.jar                                         ; zip file is empty
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
 FAILED
28 actionable tasks: 2 executed, 26 up-to-date

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileDebugJavaWithJavac'.
> Could not expand ZIP 'C:\Users\Jaylton\.gradle\caches\transforms-1\files-1.1\f                                         irebase-analytics-impl-16.1.1.aar\48ca2deb4d144e3deb97bae993965054\jars\classes.                                         jar'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug                                          option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 4s
(node:3516) UnhandledPromiseRejectionWarning: Error: cmd: Command failed with ex                                         it code 1 Error output:
error: error reading C:\Users\Jaylton\.gradle\caches\transforms-1\files-1.1\fire                                         base-analytics-impl-16.1.1.aar\48ca2deb4d144e3deb97bae993965054\jars\classes.jar                                         ; zip file is empty
error: error reading C:\Users\Jaylton\.gradle\caches\transforms-1\files-1.1\fire                                         base-analytics-impl-16.1.1.aar\48ca2deb4d144e3deb97bae993965054\jars\classes.jar                                         ; zip file is empty
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileDebugJavaWithJavac'.
> Could not expand ZIP 'C:\Users\Jaylton\.gradle\caches\transforms-1\files-1.1\f                                         irebase-analytics-impl-16.1.1.aar\48ca2deb4d144e3deb97bae993965054\jars\classes.                                         jar'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug                                          option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 4s
    at ChildProcess.whenDone (C:\projects\restapi\platforms\android\cordova\node                                         _modules\cordova-common\src\superspawn.js:169:23)
    at emitTwo (events.js:126:13)
    at ChildProcess.emit (events.js:214:7)
    at maybeClose (internal/child_process.js:925:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)
(node:3516) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This                                          error originated either by throwing inside of an async function without a catch                                          block, or by rejecting a promise which was not handled with .catch(). (rejection                                          id: 1)
(node:3516) [DEP0018] DeprecationWarning: Unhandled promise rejections are depre                                         cated. In the future, promise rejections that are not handled will terminate the                                          Node.js process with a non-zero exit code.

How to fix?

Update your CLI correct would be the first place to start.

and then?
I did this and the error persists.

delete your node modules, rebuild your gradle and retry

how to rebuild the gradle? Sorry, I’m a beginner.

I discovered that the problem is with the FCM plugin, when I remove it everything works, but I need it, how to fix it?