Update app.py

app.py

@@ -173,7 +173,7 @@ breton_engine = None
 def get_breton_engine():
     global breton_engine
     if breton_engine is None:
-        # Configuration for Sherpa-ONNX VITS
+        # 1. Specific VITS model settings
         vits_config = sherpa_onnx.OfflineTtsVitsModelConfig(
             model=os.path.join(MODEL_DIR, "breton-model.onnx"),
             tokens=os.path.join(MODEL_DIR, "breton-tokens.txt"),
@@ -183,16 +183,26 @@ def get_breton_engine():
             length_scale=1.0,
         )
         
-        config = sherpa_onnx.OfflineTtsModelConfig(
+        # 2. Wrap VITS into the Model Config
+        model_config = sherpa_onnx.OfflineTtsModelConfig(
             vits=vits_config,
             num_threads=1,
             debug=False,
             provider="cpu",
         )
         
-        breton_engine = sherpa_onnx.OfflineTts(config)
+        # 3. Wrap everything into the Top-Level OfflineTtsConfig (The missing step!)
+        full_config = sherpa_onnx.OfflineTtsConfig(
+            model=model_config,
+            # rule_fsts is required for some models, empty string is fine here
+            rule_fsts="", 
+            max_num_sentences=1,
+        )
+        
+        # Now pass the full_config to the constructor
+        breton_engine = sherpa_onnx.OfflineTts(full_config)
     return breton_engine
-
+    
 @app.post("/tts/breton")
 async def get_breton_tts(request: TTSRequest):
     try: