Update app.py

app.py

@@ -3,16 +3,22 @@ import torch
 import gradio as gr
 from TTS.api import TTS
 
-# Accept license
+# Auto accept Coqui license (no input prompt)
 os.environ["COQUI_TOS_AGREED"] = "1"
 
 # Load model
 tts = TTS(model_name="tts_models/multilingual/multi-dataset/xtts_v2")
 tts.to("cuda" if torch.cuda.is_available() else "cpu")
 
+# Grab available speakers once for fallback
+available_speakers = list(tts.synthesizer.speaker_manager.speakers.keys())
+if not available_speakers:
+    raise RuntimeError("No speakers found in model! Abort.")
+
+default_speaker = available_speakers[0]  # pick first speaker ID for fallback
+
 def generate(text, lang, speaker_wav=None):
     out_path = "output.wav"
-    
     if speaker_wav:
         tts.tts_to_file(
             text=text,
@@ -21,17 +27,15 @@ def generate(text, lang, speaker_wav=None):
             file_path=out_path
         )
     else:
-        # use default speaker
+        # Use fallback speaker ID — no more 'default' crashes
         tts.tts_to_file(
             text=text,
-            speaker="default",   # 🧠 THIS LINE FIXES THE ERROR
+            speaker=default_speaker,
             language=lang,
             file_path=out_path
         )
-    
     return out_path
 
-
 demo = gr.Interface(
     fn=generate,
     inputs=[