Fix err forgot to add flask.

app.py

@@ -42,7 +42,7 @@ def nocache(resp):
 # request log to verify what the proxy is asking for
 @app.before_request
 def _log():
-    print("REQ:", request.method, request.path)
+    print("REQ:", flask.request.method, flask.request.path)
 
 # Home
 @app.route("/")