Hello,
Just downloaded and installed the QuickStart successfully. When I go to add a new J4 component (I tried 2 different components), I get the following error:

Warning
Plugin Install: Field 'extension_id' doesn't have a default value
Error installing package

=============
System Information
=============
php: Linux xxxxx 3.10.0-957.27.2.el7.x86_64 #1 SMP Mon Jul 29 17:46:05 UTC 2019 x86_64
dbserver: mysql
dbversion: 5.7.35
dbcollation: latin1_swedish_ci
dbconnectioncollation: utf8mb4_general_ci
dbconnectionencryption:
dbconnencryptsupported: true
phpversion: 7.4.23
server: Apache
sapi_name: cgi-fcgi
version: Joomla! 4.0.0-beta5 Beta [ Mañana ] 27-October-2020 19:41 GMT
useragent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36
=============
Core
=============
PHP Version: 7.4.23

Any suggestions are welcome.
Thanks

Dear sir,

We updated the quickstart package yesterday, please download and install it again.

Thanks