Editor stuck at ‘Loading’ screen

Hi,

I have been having a problem with Elementor editor opening existing pages and creating new ones since updating to 3.1.x. If I roll back to 3.0.16 it works fine, but I see this version has an XSS vulnerability now, so I have to update.

I have tried disabling all plugins (except Woocommerce which I can’t see how to disable) and I have tried changing the theme to TwentyTwenty, but it makes no difference.

Using Chrome console, I can see the following errors

common.min.js?ver=3.1.4:2 Uncaught TypeError: Cannot read property 'finder' of undefined
    at ElementorCommonApp.translate (common.min.js?ver=3.1.4:2)
    at Function.m.addAdminMenu (editor.min.js?ver=3.1.4:2)
    at Function.m.initGroups (editor.min.js?ver=3.1.4:2)
    at Function.m.getGroups (editor.min.js?ver=3.1.4:2)
    at Function.m.addItem (editor.min.js?ver=3.1.4:2)
    at _default.addPanelMenuItem (editor.min.js?ver=3.1.4:2)
    at Editor.<anonymous> (editor.min.js?ver=3.1.4:2)
    at p (backbone.min.js?ver=1.4.0:2)
    at f (backbone.min.js?ver=1.4.0:2)
    at c (backbone.min.js?ver=1.4.0:2)

I’m out of ideas at this stage?

Thanks,

Mark