Enable logging module

usr/lib/python3.8/vmmgr/wsgiapp.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 
 import json
+import logging
 import os
 from cryptography.exceptions import InvalidSignature
 from jinja2 import Environment, FileSystemLoader
@@ -18,6 +19,7 @@ from .wsgilang import WSGILang
 from .wsgisession import WSGISession
 
 SESSION_KEY = os.urandom(26)
+logging.basicConfig(level=logging.WARNING)
 
 class WSGIApp:
     def __init__(self):