Update app.py

app.py

@@ -45,5 +45,5 @@ def lookup():
     return render_template('lookup.html', result=result)
 
 if __name__ == '__main__':
-    app.run(debug=False, host='0.0.0.0', port=5001)  # Custom port number
+    app.run(debug=False, host='127.0.0.1', port=5001)  # Custom port number