From 65995c7fa2a987fb99865c80e570c9f54801e101 Mon Sep 17 00:00:00 2001
From: Will McGugan <willmcgugan@gmail.com>
Date: Mon, 3 Oct 2022 17:12:54 +0100
Subject: [PATCH] possible fix for exception on mount

---
 mkdocs.yml            | 5 ++---
 src/textual/widget.py | 2 +-
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/mkdocs.yml b/mkdocs.yml
index 8dbc3ad38..1d609b587 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -178,9 +178,8 @@ plugins:
     default_handler: python
     handlers:
         python:
-          rendering:
-            show_source: false
-          selection:
+          options:
+            show_source: false          
             filters:
               - "!^_"
               - "^__init__$"
diff --git a/src/textual/widget.py b/src/textual/widget.py
index c8efbe8a1..1a7171413 100644
--- a/src/textual/widget.py
+++ b/src/textual/widget.py
@@ -329,7 +329,7 @@ class Widget(DOMNode):
 
         """
         self.app._register(self, *anon_widgets, **widgets)
-        self.screen.refresh(layout=True)
+        self.app.screen.refresh(layout=True)
 
     def compose(self) -> ComposeResult:
         """Called by Textual to create child widgets.