diff --git a/src/Qt5/imports/FluentUI/Controls/FluChart.qml b/src/Qt5/imports/FluentUI/Controls/FluChart.qml
index f47bd20d..457da42e 100644
--- a/src/Qt5/imports/FluentUI/Controls/FluChart.qml
+++ b/src/Qt5/imports/FluentUI/Controls/FluChart.qml
@@ -15,7 +15,9 @@ Canvas {
     function animateToNewData()
     {
         chartAnimationProgress = 0.1;
-        d.jsChart?.update();
+        if (d.jsChart) {
+            d.jsChart.update();
+        }
         chartAnimator.restart();
     }
     QtObject{
diff --git a/src/Qt5/imports/FluentUI/Controls/FluProgressBar.qml b/src/Qt5/imports/FluentUI/Controls/FluProgressBar.qml
index c89ba6fb..e75b47ba 100644
--- a/src/Qt5/imports/FluentUI/Controls/FluProgressBar.qml
+++ b/src/Qt5/imports/FluentUI/Controls/FluProgressBar.qml
@@ -41,13 +41,15 @@ ProgressBar{
             height: parent.height
             radius: d._radius
             color: control.color
-            PropertyAnimation on x {
-                id:animator_x
+            SequentialAnimation on x {
+                id: animator_x
                 running: control.indeterminate && control.visible
-                from: -rect_progress.width
-                to:control.width+rect_progress.width
                 loops: Animation.Infinite
-                duration: control.duration
+                PropertyAnimation {
+                    from: -rect_progress.width
+                    to: control.width + rect_progress.width
+                    duration: control.duration
+                }
             }
         }
     }
diff --git a/src/Qt6/imports/FluentUI/Controls/FluChart.qml b/src/Qt6/imports/FluentUI/Controls/FluChart.qml
index 30af5ab3..8153c3d8 100644
--- a/src/Qt6/imports/FluentUI/Controls/FluChart.qml
+++ b/src/Qt6/imports/FluentUI/Controls/FluChart.qml
@@ -14,7 +14,9 @@ Canvas {
     function animateToNewData()
     {
         chartAnimationProgress = 0.1;
-        d.jsChart?.update();
+        if (d.jsChart) {
+            d.jsChart.update();
+        }
         chartAnimator.restart();
     }
     QtObject{
diff --git a/src/Qt6/imports/FluentUI/Controls/FluProgressBar.qml b/src/Qt6/imports/FluentUI/Controls/FluProgressBar.qml
index bca37cea..9c2c6123 100644
--- a/src/Qt6/imports/FluentUI/Controls/FluProgressBar.qml
+++ b/src/Qt6/imports/FluentUI/Controls/FluProgressBar.qml
@@ -42,13 +42,15 @@ ProgressBar{
             height: parent.height
             radius: d._radius
             color: control.color
-            PropertyAnimation on x {
-                id:animator_x
+            SequentialAnimation on x {
+                id: animator_x
                 running: control.indeterminate && control.visible
-                from: -rect_progress.width
-                to:control.width+rect_progress.width
                 loops: Animation.Infinite
-                duration: control.duration
+                PropertyAnimation {
+                    from: -rect_progress.width
+                    to: control.width + rect_progress.width
+                    duration: control.duration
+                }
             }
         }
     }