Stuck on entering bootstrap mode

I followed this tutorial on how to install opencore big sur https://youtu.be/NndEzobUMVM?si=Ja9RQia9P0QzKwx6 but my pc got stuck at this line after choosing install mac os bigsur from the opencore boot menu. The line I got stuck Sun Sep 3 12:25:28 2023 MacBook-Air.local com.apple.xpc.launch[1] (com.apple.xpc.launchd.domain.user.loginwindow.71.4294967295) <notice>: entering bootstrap mode