Unable to Create New Pages or New Posts

What browser are you using?

Chrome

Also try:
– Troubleshooting with your browser. Your browser can help you identify JavaScript issues or conflicts and this article can assist you in doing that diagnosis. This could help identify Visual Editor issues as well.
– switching to the unedited default Theme (Twenty Seventeen.) for a moment using the WP dashboard to rule out any theme-specific issue (theme functions can interfere like plugins).

Just tested on Firefox and Explorer, same issue

It’s not the theme either.

are you migrating your site from http to https?

No, just updated my version of WordPress.

maybe you can reinstall your wordpress

Tried that too and it didn’t work.

I’m closing this thread. I ended up re-installing the previous version of WP. Last time I “get ahead” of the game by NOT waiting until I’m forced to upgrade.