minor

public/js/appChart.js

@@ -438,7 +438,7 @@ followNextLink(
   })
   .then((observationArr) => {
     // updateLineChartAC(chart1LineTitle, observationArr);
-    drawHeatMapAC2(observationArr);
+    // drawHeatMapAC2(observationArr);
 
     ///////////// use chart.js for line chart
 ///// check this out : https://stackoverflow.com/questions/57343566/zoom-function-for-chart-js