diff --git a/src/components/charts/HistoryAllPrintStatus.vue b/src/components/charts/HistoryAllPrintStatus.vue
index 30afc6a00..0d90803e3 100644
--- a/src/components/charts/HistoryAllPrintStatus.vue
+++ b/src/components/charts/HistoryAllPrintStatus.vue
@@ -80,7 +80,7 @@ export default class HistoryAllPrintStatus extends Mixins(BaseMixin) {
     }
 
     get chart(): ECharts | null {
-        return this.$refs.historyAllPrintStatus ?? null
+        return this.$refs.historyAllPrintStatus?.chart ?? null
     }
 
     mounted() {
diff --git a/src/components/charts/HistoryFilamentUsage.vue b/src/components/charts/HistoryFilamentUsage.vue
index 46f2023a1..fdc8b70ae 100644
--- a/src/components/charts/HistoryFilamentUsage.vue
+++ b/src/components/charts/HistoryFilamentUsage.vue
@@ -110,7 +110,7 @@ export default class HistoryPrinttimeAvg extends Mixins(BaseMixin) {
     }
 
     get chart(): ECharts | null {
-        return this.$refs.historyFilamentUsage ?? null
+        return this.$refs.historyFilamentUsage?.chart ?? null
     }
 
     mounted() {
diff --git a/src/components/charts/HistoryPrinttimeAvg.vue b/src/components/charts/HistoryPrinttimeAvg.vue
index 591cdf2fc..a13ae5f11 100644
--- a/src/components/charts/HistoryPrinttimeAvg.vue
+++ b/src/components/charts/HistoryPrinttimeAvg.vue
@@ -95,7 +95,7 @@ export default class HistoryPrinttimeAvg extends Mixins(BaseMixin) {
     }
 
     get chart(): ECharts | null {
-        return this.$refs.historyPrinttimeAvg ?? null
+        return this.$refs.historyPrinttimeAvg?.chart ?? null
     }
 
     mounted() {
diff --git a/src/components/charts/TempChart.vue b/src/components/charts/TempChart.vue
index 4edd127ef..5d2942353 100644
--- a/src/components/charts/TempChart.vue
+++ b/src/components/charts/TempChart.vue
@@ -27,8 +27,6 @@ interface echartsTooltipObj {
     components: {},
 })
 export default class TempChart extends Mixins(BaseMixin) {
-    convertName = convertName
-
     declare $refs: {
         tempchart: any
     }
@@ -196,7 +194,7 @@ export default class TempChart extends Mixins(BaseMixin) {
     }
 
     get chart(): ECharts | null {
-        return this.$refs.tempchart ?? null
+        return this.$refs.tempchart?.chart ?? null
     }
 
     get maxHistory() {
diff --git a/src/pages/Heightmap.vue b/src/pages/Heightmap.vue
index 3f3c7b7e6..3943d942b 100644
--- a/src/pages/Heightmap.vue
+++ b/src/pages/Heightmap.vue
@@ -649,7 +649,7 @@ export default class PageHeightmap extends Mixins(BaseMixin, ControlMixin) {
     }
 
     get chart(): ECharts | null {
-        return this.$refs.heightmap ?? null
+        return this.$refs.heightmap?.chart ?? null
     }
 
     get profiles() {