I have included https://code.highcharts.com/highcharts.js as static resource (in format text/javascript) in my org. When I tried a sample demo code, there is always a message saying .chart is not a function. I am thinking maybe I did not load the Highcharts JavaScript correctly. But I have no idea how to modify it. Here is how my js file in lwc looks like: import { LightningElement } from "lwc"; import { loadScript} from "lightning/platformResourceLoader"; import jqeuryUI from "@salesforce/resourceUrl/jquery_ui_1_12_1"; import jquery from "@salesforce/resourceUrl/jquery_2_2_4"; import Highcharts from "@salesforce/resourceUrl/highcharts"; export default class CDP_trial extends LightningElement { renderedCallback() { Promise.all([ loadScript(this, jquery) .then(() => console.log("jQuery loaded")) .catch(error => console.log("Error in loading jQuery")), loadScript(this, jqeuryUI + "/jquery-ui-1.12.1/jquery-ui.min.js") .then(() => console.log("jqeuryUI loaded")) .catch(error => console.log("Error in loading jqeuryUI")), // jquery script loadScript(this, Highcharts) .then(() => console.log("Highcharts loaded")) .catch(error => console.log("Error in loading Highcharts")) ]) .then(() => { this.runHighcharts(); }) .catch(error => { window.console.log("The error is: " + error); }); } runHighcharts() { Highcharts.chart("container", { title: { text: "Logarithmic axis demo" }, xAxis: { tickInterval: 1, type: "logarithmic", accessibility: { rangeDescription: "Range: 1 to 10" } }, yAxis: { type: "logarithmic", minorTickInterval: 0.1, accessibility: { rangeDescription: "Range: 0.1 to 1000" } }, tooltip: { headerFormat: "<b>{series.name}</b><br />", pointFormat: "x = {point.x}, y = {point.y}" }, series: [ { data: [1, 2, 4, 8, 16, 32, 64, 128, 256, 512], pointStart: 1 } ] }); } } And html is as follow: <template> <div id="container"></div> </template>