fixed session flash errors missing

session flash now contains errors key as it did previously.
The errors are now a MessageBag which aligns the Session with the View helper ‘errors()’

src/masonite/middleware/route/SessionMiddleware.py

@@ -16,6 +16,12 @@ def before(self, request, response):
         request.app.make("response").with_success = self.with_success
         request.app.make("request").session = Session
 
+        # TODO: Remove in Masonite 5
+        bag = MessageBag(Session.get("errors") or {})
+        request.app.make("view").share({"errors": bag.helper})
+        # errors are stored in session flash so 'getting' them actually clears them
+        # so re-add them to the session as a MessageBag
+        Session.flash('errors', bag)
         return request
 
     def after(self, request, _):