When upgrading to Big Sur from Catalina 10.15.6, an error occurs with the text "An error occurred while installing Mac OS. You can try to complete the installation again"
MacBook Pro 15 - 2018
MacBook Pro 15 - 2018
Error installing Mac OS Big Sur
have you enough disk space available ?
https://developer.apple.com/forums/thread/656753 - I have the same problem as described here, the problem is in the T2 security chip with BridgeOS