feat: add audio error handling

app.py

@@ -24,7 +24,13 @@ model = WhisperForConditionalGeneration.from_pretrained(
 
 
 def transcribe(audio):
-    audio, sampling_rate = librosa.load(audio, sr=16000)
+    if audio is None:
+        return "No audio file provided. Please upload an audio file."
+    try:
+        audio, sampling_rate = librosa.load(audio, sr=16000)
+    except Exception as e:
+        return f"Failed to load audio: {str(e)}"
+
     audio_input = processor(audio, return_tensors="pt", sampling_rate=16000)
     input_values = audio_input.input_features