Update app.py

app.py

@@ -122,7 +122,7 @@ def generate(model):
     
     if not speaker:
         if speaker_id is not None:
-            speaker = speaker_ids.get(speaker_id, None)       
+            speaker = speaker_ids.get(str(speaker_id), None)       
             if not speaker:
                 return jsonify({"error": f"Speaker ID `{speaker_id}` not found"}), 404
         else: