pass up audio card error to practice activity card

lib/pangea/widgets/chat/message_audio_card.dart

@@ -22,6 +22,7 @@ class MessageAudioCard extends StatefulWidget {
   final PangeaTokenText? selection;
   final TtsController tts;
   final Function(bool) setIsPlayingAudio;
+  final VoidCallback? onError;
 
   const MessageAudioCard({
     super.key,
@@ -30,6 +31,7 @@ class MessageAudioCard extends StatefulWidget {
     required this.tts,
     required this.setIsPlayingAudio,
     this.selection,
+    this.onError,
   });
 
   @override
@@ -163,6 +165,7 @@ class MessageAudioCardState extends State<MessageAudioCard> {
       if (mounted) setState(() => _isLoading = false);
     } catch (e, s) {
       debugger(when: kDebugMode);
+      widget.onError?.call();
       debugPrint(StackTrace.current.toString());
       if (!mounted) return;
       setState(() => _isLoading = false);

lib/pangea/widgets/practice_activity/multiple_choice_activity.dart

@@ -22,6 +22,7 @@ class MultipleChoiceActivity extends StatefulWidget {
   final PracticeActivityModel currentActivity;
   final TtsController tts;
   final String eventID;
+  final VoidCallback? onError;
 
   const MultipleChoiceActivity({
     super.key,
@@ -29,6 +30,7 @@ class MultipleChoiceActivity extends StatefulWidget {
     required this.currentActivity,
     required this.tts,
     required this.eventID,
+    this.onError,
   });
 
   @override
@@ -143,6 +145,7 @@ class MultipleChoiceActivityState extends State<MultipleChoiceActivity> {
               tts: widget.practiceCardController.widget.overlayController.tts,
               setIsPlayingAudio: widget.practiceCardController.widget
                   .overlayController.setIsPlayingAudio,
+              onError: widget.onError,
             ),
           ChoicesArray(
             isLoading: false,

lib/pangea/widgets/practice_activity/practice_activity_card.dart

@@ -306,6 +306,10 @@ class PracticeActivityCardState extends State<PracticeActivityCard> {
     }
   }
 
+  void _onDownstreamError() {
+    _setPracticeActivity(null);
+  }
+
   /// clear the current activity, record, and selection
   /// fetch a new activity, including the offending activity in the request
   Future<void> submitFeedback(String feedback) async {
@@ -373,6 +377,7 @@ class PracticeActivityCardState extends State<PracticeActivityCard> {
           currentActivity: currentActivity!,
           tts: widget.ttsController,
           eventID: widget.pangeaMessageEvent.eventId,
+          onError: _onDownstreamError,
         );
     }
   }