Can’t make new posts. Never posted before.

I have never made posts on my website before today, so I don’t know if this is a WordPress 5.1 issue or not. I just created a blog page on my website, and I was trying to make a post on it when it said, “The editor has encountered an unexpected error.” It gave me three buttons: Attempt Recovery, Copy Post Text (useless, since it blipped to the error before I could type anything), and Copy Error.

Here is what I got when I clicked the Copy Error button:

TypeError: Cannot read property 'show_ui' of undefined
    at http://www.thornburgproofreading.com/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:241342
    at i (http://www.thornburgproofreading.com/wp-includes/js/dist/vendor/lodash.min.js?ver=4.17.11:6:91)
    at An.filter (http://www.thornburgproofreading.com/wp-includes/js/dist/vendor/lodash.min.js?ver=4.17.11:99:338)
    at http://www.thornburgproofreading.com/wp-includes/js/dist/editor.min.js?ver=9.0.11:55:241307
    at ph (http://www.thornburgproofreading.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.6.3:97:88)
    at eg (http://www.thornburgproofreading.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.6.3:125:307)
    at fg (http://www.thornburgproofreading.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.6.3:126:168)
    at wc (http://www.thornburgproofreading.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.6.3:138:237)
    at fa (http://www.thornburgproofreading.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.6.3:137:115)
    at gg (http://www.thornburgproofreading.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.6.3:135:196)

• This topic was modified 5 years, 1 month ago by darcy2017.
• This topic was modified 5 years, 1 month ago by Jan Dembowski.

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