Fix Gradio runtime errors

app.py

@@ -11,7 +11,7 @@ import torch
 import torchaudio
 import gradio as gr
 from pathlib import Path
-from typing import Optional, Tuple, List, Dict
+from typing import Optional, List, Dict
 from datetime import datetime
 import shutil
 
@@ -70,7 +70,7 @@ class VoiceModelTrainer:
         algorithm: str,
         batch_size: int,
         progress=None
-    ) -> Tuple[str, str, str]:
+    ):
         """Train the model with RL."""
         if self.training_active:
             return "⚠️ Training already in progress", None, None
@@ -190,7 +190,7 @@ class VoiceModelTrainer:
         checkpoint_path: str,
         sample_audio: str,
         progress=None
-    ) -> Tuple[str, str, str]:
+    ):
         """Generate audio comparison."""
         try:
             if not checkpoint_path or not Path(checkpoint_path).exists():
@@ -453,4 +453,10 @@ def create_app():
 
 if __name__ == "__main__":
     app = create_app()
-    app.launch()
+    app.queue()
+    app.launch(
+        server_name="0.0.0.0",
+        server_port=7860,
+        share=False,
+        show_api=False
+    )