[YouTube] Correctly handle unverified channels

Author: FineFindus

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeParsingHelper.java

@@ -1599,9 +1599,13 @@ public static JsonBuilder<JsonObject> prepareJsonBuilder(
     @Nullable
     public static JsonObject getFirstCollaborator(final JsonObject navigationEndpoint)
             throws ParsingException {
-        // CHECKSTYLE:OFF
-        final JsonArray listItems = JsonUtils.getArray(navigationEndpoint, "showDialogCommand.panelLoadingStrategy.inlineContent.dialogViewModel.customContent.listViewModel.listItems");
-        // CHECKSTYLE:ON
-        return listItems.getObject(0).getObject("listItemViewModel");
+        try {
+            // CHECKSTYLE:OFF
+            final JsonArray listItems = JsonUtils.getArray(navigationEndpoint, "showDialogCommand.panelLoadingStrategy.inlineContent.dialogViewModel.customContent.listViewModel.listItems");
+            // CHECKSTYLE:ON
+            return listItems.getObject(0).getObject("listItemViewModel");
+        } catch (final ParsingException e) {
+            return null;
+        }
     }
 }

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java

@@ -550,12 +550,15 @@ public boolean isUploaderVerified() throws ParsingException {
                 .getArray("badges"));
         }
 
+
+        final JsonObject channel = YoutubeParsingHelper.getFirstCollaborator(
+            videoOwnerRenderer.getObject("navigationEndpoint"));
+        if (channel == null) {
+            return false;
+        }
+
         return YoutubeParsingHelper.hasArtistOrVerifiedIconBadgeAttachment(
-            YoutubeParsingHelper.getFirstCollaborator(videoOwnerRenderer
-                .getObject("navigationEndpoint"))
-                .getObject("title")
-                .getArray("attachmentRuns")
-        );
+            channel.getObject("title").getArray("attachmentRuns"));
     }
 
     @Nonnull