check valid pointer (#2674)

Signed-off-by: Ian Chen <[email protected]> (cherry picked from commit 57599fb)
gazebosim · Nov 12, 2024 · 9889df4 · 9889df4
1 parent c298007
commit 9889df4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/systems/optical_tactile_plugin/OpticalTactilePlugin.cc b/src/systems/optical_tactile_plugin/OpticalTactilePlugin.cc
@@ -630,7 +630,7 @@ void OpticalTactilePluginPrivate::Enable(const gz::msgs::Boolean &_req)
 
   this->enabled = _req.data();
 
-  if (!_req.data())
+  if (!_req.data() && this->visualizePtr)
   {
     this->visualizePtr->RemoveNormalForcesAndContactsMarkers();
   }