The editor has encountered unexpected error

Hi,
I installed gutenberg 8.2.0 beta 2 on my drupal 9.
I'm visually empaired so, I can't see the video of installation, but, I installed it as usual:
1) I downloaded .tar.gz
2) unpacked .tar.gz in modules folder
3) I enabled all modules

So, I activated gutenberg experience ona content type, and tried to create content.

I received this error: the editor encountered unexpected error.
I clicked on "Copy error" and this is the result:

FormPanel/<@http://172.104.15.182/dramabooks/web/modules/gutenberg/js/filters/sidebar.js?qbxadz:25:19
Vb@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
Xi@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
unstable_runWithPriority@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react.min....
Ma@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
Yb@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
O@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
ze@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
mg/<@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom.min.js?v=16.8.4:53:49
unstable_runWithPriority@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react.min....
Ma@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
mg@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
V@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
Sb@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
Mg@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/react-dom....
e@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/...
Me/ o/<@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/data/index.js?qbxadz:1:21338
o@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/...
B/b p@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/...
s/ x/ I/ dispatch@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/...
n@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/...
e/<@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/redux-routine/index.js?qbxadz:1:5201
e@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/...
u/<@http://172.104.15.182/dramabooks/web/modules/gutenberg/vendor/gutenberg/redux-routine/index.js?qbxadz:1:5130

I rebuilt the cache with drush, but nothing changed.
What can I do?