To be able to help you, we need more information. In general in CentOS Stream there shouldn't be any InstallClasses but from what you wrote here I'm not sure if you are using CentOS Stream or different CentOS variant.
Ideally please file a bug in https://bugzilla.redhat.com/ and send reply here with the link to the bug.
On Tue, 2021-03-30 at 18:22 +0800, yangtao wrote:
Hi Sir,While I installing CentOS, X server start up failed, and falling back to text mode.Unfortunately, the anaconda is blocked, and the last message is about installclass.Is there possible anaconda blocked on installclass?Best Regards!Tao
_______________________________________________Anaconda-devel-list mailing list