"Add null check to prevent crash in GradualFlowPlugin"

A null check condition has been added to the 'usePlugin' method in GradualFlowPlugin.py to ensure 'activeMachine' is not None before accessing its 'extruderList'. Previously, if 'activeMachine' was null, it would lead to a crash while trying to access its properties. Therefore, this change improves the robustness of the code. Fixes CURA-11144
Ultimaker · Oct 11, 2023 · c311dce · c311dce · MikeOxawopper · Oct 11, 2023
1 parent 9deac72
commit c311dce
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/CuraEngineGradualFlow/GradualFlowPlugin.py b/CuraEngineGradualFlow/GradualFlowPlugin.py
@@ -38,7 +38,7 @@ def _on_container_load_complete(self, container_id) -> None:
 
     def usePlugin(self):
         machine_manager = CuraApplication.getInstance().getMachineManager()
-        return any([extr.getProperty(f"{constants.settings_prefix}_gradual_flow_enabled", "value") for extr in machine_manager.activeMachine.extruderList if extr.hasProperty(f"{constants.settings_prefix}_gradual_flow_enabled", "value")])
+        return any([extr.getProperty(f"{constants.settings_prefix}_gradual_flow_enabled", "value") for extr in machine_manager.activeMachine.extruderList if machine_manager.activeMachine is not None and extr.hasProperty(f"{constants.settings_prefix}_gradual_flow_enabled", "value")])
 
     def getPort(self):
         return super().getPort() if not self.isDebug() else int(os.environ["CURAENGINE_GCODE_PATHS_MODIFY_PORT"])