Сбой домашнего пивоварения MacOS на виртуальной машине Big Sur Beta на VirtualBox

Я новичок в разработке для MacOs. Я установил бета-версию MACOS Big Sur на Virtualbox, установил Xcode. Когда я установил Homebrew и запустил brew doctor. Я столкнулся с ошибкой неверной версии. Я пробовал много вещей в соответствии с другими сообщениями здесь. Не помогло.

    xxxxxxxxxxxxxxx-iMac ~ % /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
==> Checking for `sudo` access (which may request your password).
Password:
==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew

Press RETURN to continue or any other key to abort
==> /usr/bin/sudo /usr/sbin/chown -R xxxxxxxxxxx:admin /usr/local/Homebrew
==> Downloading and installing Homebrew...
remote: Enumerating objects: 44, done.
remote: Counting objects: 100% (42/42), done.
remote: Compressing objects: 100% (19/19), done.
remote: Total 44 (delta 23), reused 40 (delta 22), pack-reused 2
Unpacking objects: 100% (44/44), done.
From https://github.com/Homebrew/brew
   6bb369916..5ea678bbc  master      -> origin/master
 * [new branch]          spdx-update -> origin/spdx-update
Updating files: 100% (2680/2680), done.
HEAD is now at 5ea678bbc Merge pull request #11824 from cnnrmnn/latest-head-kegs
Updated 1 tap (homebrew/core).
==> Installation successful!

==> Homebrew has enabled anonymous aggregate formulae and cask analytics.
Read the analytics documentation (and how to opt-out) here:
  https://docs.brew.sh/Analytics
No analytics data has been sent yet (or will be during this `install` run).

==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
  https://github.com/Homebrew/brew#donations

==> Next steps:
- Run `brew help` to get started
- Further documentation: 
    https://docs.brew.sh
xxxxxxxxxxxxx-iMac ~ % brew doctor
Error: macOS '10.16' is invalid
xxxxxxxxxxxxx-iMac ~ % 

Ошибка 10.16 недействительна Мой MACOS — Big Sur 11.0 Beta (20A4300b). Любые советы по исправлению этого? Я не могу продолжить установку другого варева, не пройдя через это. Спасибо.