Also add check to src

Author: Shadow-Devil

src/Chartjs/assets/src/controller.ts

@@ -29,6 +29,11 @@ export default class extends Controller {
     private chart: Chart | null = null;
 
     connect() {
+        if(Chart.getChart(this.element)) {
+            // Chart is already connected
+            return;
+        }
+
         if (!isChartInitialized) {
             isChartInitialized = true;
             this.dispatchEvent('init', {