Update app.py

app.py

@@ -131,7 +131,7 @@ def predict(prompt, style, audio_file_pth, agree):
                 None,
             )
         else:
-            decoded_bytes = base64.b64decode(json_data['result']['base64'])
+            decoded_bytes = base64.b64decode(json_data['result']['base64'].encode('utf-8'))
             with open(save_path, 'wb') as f:
                 f.write(decoded_bytes)