[Bug] "your CLT doesn't support macos11"

[javaservlets]

🐛 Bug

If you're looking to report an issue with the Diem Core project go to https://github.com/libra/libra

Steps to reproduce

NOTE: this was captured on 1.24.2121

1. try to build diem/reference-wallet on macos 11.2.1
2. as seen in screenshot, build fails with "your CLT doesn't support macos11"

perhaps docs need to be updated with a workaround

** Error message or problem **

"your CLT doesn't support macos11"
<img width="1280" alt="macos11wallet" src="https://user-images.githubusercontent.com/7838889/111818252-31665d80-889c-11eb-9acc-6b5b65fbb05a.png">

Expected Behavior

System information

Please complete the following information:

MacOS 11.2.1

Additional context