fix: load model inside transcribe function to ensure availability during audio processing

app.py

@@ -30,6 +30,8 @@ def transcribe(audio, state="", audio_buffer=None, last_processed_time=0):
     import soundfile as sf
     import librosa
     import os
+    model = load_model()
+    
     if audio_buffer is None:
         audio_buffer = []