FileOpener working

config.xml

@@ -22,7 +22,7 @@
     <preference name="SplashScreenDelay" value="3000" />
     <platform name="android">
         <edit-config file="app/src/main/AndroidManifest.xml" mode="merge" target="/manifest/application" xmlns:android="http://schemas.android.com/apk/res/android">
-            <application android:networkSecurityConfig="@xml/network_security_config" />
+            <application android:requestLegacyExternalStorage="true" android:networkSecurityConfig="@xml/network_security_config" />
         </edit-config>
         <resource-file src="resources/android/xml/network_security_config.xml" target="app/src/main/res/xml/network_security_config.xml" />
         <resource-file src="google-services.json" target="google-services.json" />

src/app/app.module.ts

@@ -59,7 +59,7 @@ import { CookieService } from 'ngx-cookie-service';
 import { ImagePicker } from '@ionic-native/image-picker/ngx';
 import { MediaCapture } from '@ionic-native/media-capture/ngx';
 import { Media } from '@ionic-native/media/ngx';
-import { File } from '@ionic-native/file/ngx'; 
+import { File } from '@awesome-cordova-plugins/file/ngx';
 
 import { StreamingMedia } from '@ionic-native/streaming-media/ngx';
 import { PhotoViewer } from '@ionic-native/photo-viewer/ngx';
@@ -67,6 +67,7 @@ import {NgxImageCompressService} from 'ngx-image-compress';
 import { CustomImageCachePageRoutingModule } from './services/file/custom-image-cache/custom-image-cache-routing.module';
 import { IonicImageLoaderComponent, IonicImageLoaderModule } from 'ionic-image-loader-v5';
 import { NgxExtendedPdfViewerModule } from 'ngx-extended-pdf-viewer';
+import { FileOpener } from '@awesome-cordova-plugins/file-opener/ngx';
 
 /* import { FCM } from '@ionic-native/fcm/ngx';
 import { FirebaseX } from '@ionic-native/firebase-x/ngx'; */
@@ -141,7 +142,8 @@ import { FirebaseX } from '@ionic-native/firebase-x/ngx'; */
     PhotoViewer,
     NgxImageCompressService,
     MultipleDocumentsPicker,
-    NgxExtendedPdfViewerModule
+    NgxExtendedPdfViewerModule,
+    FileOpener
     
   ],
   bootstrap: [AppComponent],

src/app/pages/chat/messages/messages.page.ts

@@ -1066,7 +1066,8 @@ export class MessagesPage implements OnInit, AfterViewInit, OnDestroy {
   b64toBlob(b64Data, contentType, sliceSize) {
     contentType = contentType || '';
     sliceSize = sliceSize || 512;
-    var byteCharacters = atob(b64Data);
+    const encodedData = btoa(b64Data);
+    var byteCharacters = atob(encodedData);
     var byteArrays = [];
     for (var offset = 0; offset < byteCharacters.length; offset += sliceSize) {
       var slice = byteCharacters.slice(offset, offset + sliceSize);