“The editor has encountered an unexpected error”

Hello! I’m very excited about switching my site, Writes of Way, from Libretto to Twenty Twenty-Two. I’ve set up Test.Writesofway.Org to try things out before making them on the live site. However, when I tried using the editor today, I got this message:

The editor has encountered an unexpected error.

The error is specified as follows:

ReferenceError: mappl10n is not defined
    at mapp.Store.fetchItems (https://test.writesofway.org/wp-content/plugins/mappress-google-maps-for-wordpress/build/index_mappress_admin.js?ver=2.73.9:1:110965)
    at https://test.writesofway.org/wp-content/plugins/mappress-google-maps-for-wordpress/build/index_mappress_admin.js?ver=2.73.9:1:12908
    at Tj (https://test.writesofway.org/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:179:399)
    at unstable_runWithPriority (https://test.writesofway.org/wp-includes/js/dist/vendor/react.min.js?ver=17.0.1:24:26)
    at Za (https://test.writesofway.org/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:73:8)
    at Ra (https://test.writesofway.org/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:178:368)
    at gf (https://test.writesofway.org/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:161:497)
    at https://test.writesofway.org/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:73:230
    at unstable_runWithPriority (https://test.writesofway.org/wp-includes/js/dist/vendor/react.min.js?ver=17.0.1:24:26)
    at Za (https://test.writesofway.org/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:73:8)

Obviously something is going on with the MapPress plugin, but does anyone recognize the other issues and what they might be related to?

Any pointers would be greatly appreciated.

Thanks,
Ben

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