Fix state management

app.py

@@ -27,7 +27,11 @@ def process_audio_file(file):
 
 
 def transcribe(Audio, state=""):
-    time.sleep(2)
+    # Grant additional context
+    time.sleep(0.64)
+
+    if state is None:
+        state = ""
 
     audio_data = process_audio_file(Audio)