Buttons in admin interface stopped working

Hi, I am having several problems with UpdraftPlus that have begun recently. One is that some of the buttons in the admin interface have stopped working, including the Backup Now button, the Delete buttons and the Settings tab. I’ve tried looking in the Chrome browser console, and when I click the Backup Now button I get this error:

updraft-admin-common…24.3.1717760509:522 Uncaught

TypeError: jQuery(…).dialog is not a function at updraft_backup_dialog_open (updraft-admin-common…3.1717760509:522:38) at HTMLButtonElement.onclick (options-general.php?…ab=settings:958:167)

updraft-admin-common…24.3.1717760509:866

TypeError: jQuery(…).dialog is not a function at updraft_poll_get_parameters (updraft-admin-common…3.1717760509:860:33) at updraft_activejobs_update (updraft-admin-common…3.1717760509:887:14) at updraft-admin-common…3.1717760509:3215:4

Can you help or advise on this please?