From 122c760db1f98dd65c145bc656e3ebe842b18786 Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Fri, 16 Dec 2022 18:40:16 +1000
Subject: [PATCH] Non fatal

---
 src/core/project/qgsproject.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/core/project/qgsproject.cpp b/src/core/project/qgsproject.cpp
index eb5264517d8e..6952ae2bda83 100644
--- a/src/core/project/qgsproject.cpp
+++ b/src/core/project/qgsproject.cpp
@@ -3669,7 +3669,8 @@ QString QgsProject::presetHomePath() const
 
 QgsRelationManager *QgsProject::relationManager() const
 {
-  QGIS_PROTECT_QOBJECT_THREAD_ACCESS
+  // because relation aggregate functions are not thread safe
+  QGIS_PROTECT_QOBJECT_THREAD_ACCESS_NON_FATAL
 
   return mRelationManager;
 }