From 20a78cce43be843364258dcad8a646d6c112ce64 Mon Sep 17 00:00:00 2001
From: alves <liulikeqian@gmail.com>
Date: Wed, 7 Jan 2026 16:43:17 +0800
Subject: [PATCH] fix exit application and check the data is valid.then don't
 use undefine data.

---
 src/slic3r/GUI/GLCanvas3D.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 815fce5d5a..abad24d327 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -1330,7 +1330,10 @@ void GLCanvas3D::reset_volumes()
     m_volumes.clear();
     m_dirty = true;
 
-    _set_warning_notification(EWarning::ObjectOutside, false);
+    if (wxGetApp.plater() && wxGetApp().plater()->get_notification_manager())
+    {
+        _set_warning_notification(EWarning::ObjectOutside, false);
+    }
 }
 
 //BBS: get current plater's bounding box
@@ -9695,8 +9698,15 @@ void GLCanvas3D::_set_warning_notification(EWarning warning, bool state)
     //BBS: this may happened when exit the app, plater is null
     if (!wxGetApp().plater())
         return;
+    NotificationManager* notification_managerEx = wxGetApp().plater()->get_notification_manager();
     auto& notification_manager = *wxGetApp().plater()->get_notification_manager();
 
+    if (!notification_managerEx)
+    {
+        BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << boost::format("notification_manager is null");
+        return;
+    }
+
     switch (error)
     {
     case PLATER_WARNING: