From d9438b81f3e69cf4b2719654b714dbe56d25c43c Mon Sep 17 00:00:00 2001
From: danhaywood <dan@haywood-associates.co.uk>
Date: Thu, 5 Aug 2021 22:49:56 +0100
Subject: [PATCH] ISIS-2730: catches exception and falls back to welcome page

(cherry picked from commit 16eb40a5caa4405c2199468162a8ae4e450a805f)
---
 .../isis/viewer/wicket/ui/pages/home/HomePage.java       | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/viewers/wicket/ui/src/main/java/org/apache/isis/viewer/wicket/ui/pages/home/HomePage.java b/viewers/wicket/ui/src/main/java/org/apache/isis/viewer/wicket/ui/pages/home/HomePage.java
index a66ab4541ab..583c8b27fd4 100644
--- a/viewers/wicket/ui/src/main/java/org/apache/isis/viewer/wicket/ui/pages/home/HomePage.java
+++ b/viewers/wicket/ui/src/main/java/org/apache/isis/viewer/wicket/ui/pages/home/HomePage.java
@@ -61,7 +61,14 @@ private void buildGui() {
 
         if(ManagedObjects.isSpecified(homePageAdapter)) {
             val requestCycle = RequestCycle.get();
-            requestCycle.setResponsePage(new EntityPage(getCommonContext(), homePageAdapter));
+            try {
+                val page = new EntityPage(getCommonContext(), homePageAdapter);
+                requestCycle.setResponsePage(page);
+            } catch (Exception ignore) {
+                // fallback (eg if permissions problem)
+                Components.permanentlyHide(themeDiv, ComponentType.ACTION_PROMPT);
+                getComponentFactoryRegistry().addOrReplaceComponent(themeDiv, ComponentType.WELCOME, null);
+            }
 
         } else {
             Components.permanentlyHide(themeDiv, ComponentType.ACTION_PROMPT);