Maybe the new Gutenberg editing experience is the present and future of editing in WordPress -- but it's been giving me a lot of headaches so far. I've been getting "Updating failed" and "Publishing failed" messages. Also the Preview doesn't work. I looked at posts like the following for help -- but to no avail:

• "Updating Failed" / "Publishing Failed" on latest Update (temp conflict with an unknown theme or solved by deactivating and reactivating WP Cerber) · Issue #7652 · WordPress/gutenberg
• Preview stuck in "generating preview" (about:blank ) after auto-save on published post · Issue #7561 · WordPress/gutenberg
• Saving: Autosaveable does not account for autosave existing at start of editing · Issue #7416 · WordPress/gutenberg

I'm just punting and going back to the Classic Editor using Classic Editor | WordPress.org.