Fix QML warning

fieldOfView · fieldOfView · commit b773cbb84d2b · 2021-05-03T10:06:38.000+02:00
diff --git a/resources/qml/ExtruderTabs.qml b/resources/qml/ExtruderTabs.qml
@@ -108,7 +108,7 @@ TabRow
                         }
                     }
                     property bool valueWarning: !Cura.SidebarGUIPlugin.getExtruderHasQualityForMaterial(extruderStack)
-                    property bool valueError: Cura.ContainerManager.getContainerMetaDataEntry(extruderStack.material.id, "compatible", "") != "True"
+                    property bool valueError: extruderStack == undefined ? false : Cura.ContainerManager.getContainerMetaDataEntry(extruderStack.material.id, "compatible", "") != "True"
 
                     visible: (tabBar.hasMaterials || tabBar.hasVariants) && (valueWarning || valueError)
 

Original file line number	Diff line number	Diff line change
`@@ -108,7 +108,7 @@ TabRow`
`108`	`108`	`}`
`109`	`109`	`}`
`110`	`110`	`property bool valueWarning: !Cura.SidebarGUIPlugin.getExtruderHasQualityForMaterial(extruderStack)`
`111`		`- property bool valueError: Cura.ContainerManager.getContainerMetaDataEntry(extruderStack.material.id, "compatible", "") != "True"`
	`111`	`+ property bool valueError: extruderStack == undefined ? false : Cura.ContainerManager.getContainerMetaDataEntry(extruderStack.material.id, "compatible", "") != "True"`
`112`	`112`
`113`	`113`	`visible: (tabBar.hasMaterials \|\| tabBar.hasVariants) && (valueWarning \|\| valueError)`
`114`	`114`