Gutenberg is a newly upgraded editor of WordPress after version 5.0. Its operation and usage are revolutionary, but there are still some small bugs. When editing an article, there are several questions from time to time:
1. The editor encountered an unknown error.
2. The editor cannot respond.
3. Wait.
There are three main solutions:
1. Switch browsers.
2. Clear browser cache.
3. Install the Classic Editor plug-in.