Hi dFactory, thank you for replying.
I’ve updated the plugin, purged the site cache, opened it in incognito mode, but the error still persists to this day.
Uncaught Error: cannot call methods on sortable prior to initialization; attempted to call method 'disable'
at Function.error (jquery.min.js?ver=3.6.0:2:2616)
at HTMLDivElement.<anonymous> (core.min.js?ver=1.13.1:116:2055)
at Function.each (jquery.min.js?ver=3.6.0:2:3003)
at s.fn.init.each (jquery.min.js?ver=3.6.0:2:1481)
at s.fn.init.x.fn.<computed> [as sortable] (core.min.js?ver=1.13.1:116:1794)
at admin-galleries.js?ver=2.3.5:689:16