Hi, Sean
Do you have some suggestion for this CI failure?

From: Xu, Min M <min.m.xu@intel.com>
Sent: Friday, April 1, 2022 9:14 AM
To: Kinney, Michael D <michael.d.kinney@intel.com>; devel@edk2.groups.io
Cc: Yao, Jiewen <jiewen.yao@intel.com>; Xu, Min M <min.m.xu@intel.com>
Subject: EDK2 CI Broken

Hi,
The EDK2 CI seems broken from yesterday. PR failed with the errors at "Update" and "Copy base tools build log".

/opt/hostedtoolcache/Python/3.9.12/x64/bin/stuart_update -c ArmVirtPkg/PlatformCI/PlatformBuild.py TOOL_CHAIN_TAG=GCC5 -t DEBUG -a AARCH64
(node:2764) Warning: Use Cipheriv for counter mode of aes-256-ctr
(node:2764) Warning: Use Cipheriv for counter mode of aes-256-ctr
(node:2764) Warning: Use Cipheriv for counter mode of aes-256-ctr
(node:2764) Warning: Use Cipheriv for counter mode of aes-256-ctr
(node:2764) Warning: Use Cipheriv for counter mode of aes-256-ctr
(node:2764) Warning: Use Cipheriv for counter mode of aes-256-ctr
(node:2764) Warning: Use Cipheriv for counter mode of aes-256-ctr
SECTION - Init SDE
SECTION - Loading Plugins
SECTION - Start Invocable Tool
SECTION - Initial update of environment
Updating... Done
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.9.12/x64/bin/stuart_update", line 8, in <module>
  sys.exit(main())
File "/opt/hostedtoolcache/Python/3.9.12/x64/lib/python3.9/site-packages/edk2toolext/invocables/edk2_update.py", line 101, in main
  Edk2Update().Invoke()
File "/opt/hostedtoolcache/Python/3.9.12/x64/lib/python3.9/site-packages/edk2toolext/base_abstract_invocable.py", line 146, in Invoke
  retcode = self.Go()
File "/opt/hostedtoolcache/Python/3.9.12/x64/lib/python3.9/site-packages/edk2toolext/invocables/edk2_update.py", line 71, in Go
  (build_env_old, shell_env_old, _) = self.PerformUpdate()
File "/opt/hostedtoolcache/Python/3.9.12/x64/lib/python3.9/site-packages/edk2toolext/invocables/edk2_update.py", line 41, in PerformUpdate
  (success, failure) = self_describing_environment.UpdateDependencies(ws_root, scopes, skipped_dirs)
File "/opt/hostedtoolcache/Python/3.9.12/x64/lib/python3.9/site-packages/edk2toolext/environment/self_describing_environment.py", line 364, in UpdateDependencies
  return build_env.update_extdeps(shell_env)
File "/opt/hostedtoolcache/Python/3.9.12/x64/lib/python3.9/site-packages/edk2toolext/environment/self_describing_environment.py", line 277, in update_extdeps
  results = pool_handle.get()