Page blank

Hi there

I’ve just installed the plugin, when clicking on the link to the wallet I can see the logo starting but it goes all blank.
checked the browser for errors this is what I got.

Uncaught (in promise) TypeError: Cannot read property 'addEventListener' of null
    at o.addStartPageListeners (load-app.php?ver=1.1.2-d1396d:1)
    at o.checkCompletionOfAppCeation (load-app.php?ver=1.1.2-d1396d:1)
    at o.<anonymous> (load-app.php?ver=1.1.2-d1396d:1)
    at l (vendor.js?ver=1.1.2-d1396d:143)
    at Generator._invoke (vendor.js?ver=1.1.2-d1396d:143)
    at Generator.next (vendor.js?ver=1.1.2-d1396d:143)
    at r (vendor.js?ver=1.1.2-d1396d:1)
    at a (vendor.js?ver=1.1.2-d1396d:1)
    at vendor.js?ver=1.1.2-d1396d:1
    at new Promise (<anonymous>)

coming from this file:
wp-content/plugins/multi-currency-wallet/includes/enqueue_scripts/load-app.php?ver=1.1.2-d1396d

Any thoughts
regards