From fa4a2eb5e3e2f8c5316a32454811142fc529a289 Mon Sep 17 00:00:00 2001
From: matlabbe <matlabbe@gmail.com>
Date: Thu, 7 Sep 2023 10:29:18 -0700
Subject: [PATCH] Fixed build on 22.04 caused by
 9e86faa4addd72a311fd0c894b303bc034f6ad15

---
 guilib/src/GraphViewer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/guilib/src/GraphViewer.cpp b/guilib/src/GraphViewer.cpp
index 4e80da439e..75a13e7603 100644
--- a/guilib/src/GraphViewer.cpp
+++ b/guilib/src/GraphViewer.cpp
@@ -62,6 +62,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	#include <QStandardPaths>
 #endif
 
+#include <fstream>
+
 namespace rtabmap {
 
 class NodeItem: public QGraphicsEllipseItem