add debug messages

app.py

@@ -43,7 +43,9 @@ def convert_to_wav(in_filename: str) -> str:
     out_filename = f"{in_filename}.wav"
 
     logging.info(f"Converting '{in_filename}' to '{out_filename}'")
-    _ = os.system(f"ffmpeg -hide_banner -i '{in_filename}' -ar 16000 '{out_filename}'")
+    _ = os.system(
+        f"ffmpeg -hide_banner -i '{in_filename}' -ar 16000 -ac 1 '{out_filename}' -y"
+    )
 
     return out_filename
 

model.py

@@ -22,6 +22,10 @@ import torch
 import torchaudio
 from huggingface_hub import hf_hub_download
 
+os.system(
+    "cp -v /usr/local/lib/python3.8/site-packages/k2/lib/*.so //usr/local/lib/python3.8/site-packages/sherpa/lib/"
+)
+
 os.system(
     "cp -v /home/user/.local/lib/python3.8/site-packages/k2/lib/*.so /home/user/.local/lib/python3.8/site-packages/sherpa/lib/"
 )