Setting the License

To remove the watermark displayed on the gantt chart, you will need to purchase the license and set it like below

import ApexGantt from 'apexgantt';

// set license key before creating any charts
ApexGantt.setLicense('your-license-key');

const gantt = new ApexGantt(document.getElementById('gantt-container'), ganttOptions);
gantt.render();

You will receive your license key via email after purchasing a plan.