Update app.py

app.py

@@ -14,6 +14,9 @@ whisper_model = whisper.load_model("base")
 
 # Whisper transcription function
 def transcribe_audio(file_path):
+    if file_path is None:  # 🔧 THIS LINE FIXED YOUR BUG
+        return "❌ No audio file provided."
+
     try:
         audio = AudioSegment.from_file(file_path)
         converted_path = "converted.wav"