Update app.py

app.py

@@ -11,6 +11,7 @@ from presidio_analyzer import AnalyzerEngine, RecognizerRegistry, PatternRecogni
 from presidio_anonymizer import AnonymizerEngine
 from presidio_anonymizer.entities import OperatorConfig
 import tempfile
+import pytz
 
 st.set_page_config(page_title="Presidio PHI De-identification", layout="wide", initial_sidebar_state="expanded", menu_items={"About": "https://microsoft.github.io/presidio/"})
 dotenv.load_dotenv()