Gutentor has the same requirements as for WordPress
Here is the system required to install Gutentor in your WordPress admin panel:
- WordPress 5.0 or later, the latest version of WordPress is recommended
- Latest PHP version (7.1 or above)
- Latest MySQL version (5.6 or above)
- Remove Classic Editor Plugin or Switch to Block Editor for the page/post
*** Make sure Block Editor is not disabled
*** Installing Gutenberg plugin is not necessary