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Opening blocks editor gives error “The “custom-sidebar-metabox” plugin has encountered an error and cannot be rendered.” Occurs on pages/posts – new/edit.
Console reports …
15:29:39.476 TypeError: w.includes is not a function
render https://xxxxxxxxxxxxxxxx/wp-content/plugins/search-exclude/build/gutenberg/js/index.js?ver=9da98254e8b9b48b2b08:1
Also, search exclude settings page does not display anything, (including title, description and page list).
Does not occur in 2.1.5.
Does not occur on all sites.
(This appears different to the other issue now marked resolved).