using multieffect from qt 6 instead of fastblur

src/qml/presenter/ServiceList.qml

@@ -1,4 +1,5 @@
 import QtQuick 2.13
+import QtQuick.Effects
 import QtQuick.Controls 2.12 as Controls
 /* import QtQuick.Window 2.15 */
 import QtQuick.Layouts 1.15
@@ -21,17 +22,16 @@ Item {
         id: bg
         color: Kirigami.Theme.backgroundColor
         anchors.fill: parent
+        opacity: 0.90
     }
 
-    FastBlur {
+    MultiEffect {
         id: backgroundBlur
-        source: ShaderEffectSource {
-            sourceItem: bg
-            sourceRect: Qt.rect(0, 0, backgroundBlur.width, backgroundBlur.height)
-        }
-        anchors.fill: parent
-        radius: 82
-        opacity: 0.60
+        source: bg
+        anchors.fill: bg
+        blur: 1.0
+        blurMultiplier: 20
+        blurEnabled: true
     }
 
     ColumnLayout {