RuntimeError: npm dependencies failed to install

[Spencerai]

failed install the extensions:
"https://registry.npm.taobao.org/@fortawesome/fontawesome-free/-/fontawesome-free-5.13.0.tgz: Request failed "404 Not Found"".

below is the log:
spencer@spencer work % jupyter labextension install @jupyterlab/github
Building jupyterlab assets (build:prod:minimize)
An error occured.
RuntimeError: npm dependencies failed to install
See the log file for details: /var/folders/r4/sqyp9pmj7sl8lc7q5grjvdh80000gn/T/jupyterlab-debug-8j8rfory.log

in the log:
Node v12.16.3

Yarn configuration loaded.

/usr/local/bin/npm pack @jupyterlab/github
npm notice
npm notice 📦 @jupyterlab/github@2.0.0
npm notice === Tarball Contents ===
npm notice 2.3kB package.json
npm notice 1.5kB LICENSE
npm notice 6.2kB README.md
npm notice 2.3kB lib/browser.d.ts
npm notice 13.0kB lib/browser.js
npm notice 6.5kB lib/contents.d.ts
npm notice 23.0kB lib/contents.js
npm notice 4.8kB lib/github.d.ts
npm notice 3.1kB lib/github.js
npm notice 251B lib/index.d.ts
npm notice 5.4kB lib/index.js
npm notice 679B schema/drive.json
npm notice 2.4kB style/binder.svg
npm notice 2.7kB style/index.css
npm notice 35.4kB style/octocat_error.png
npm notice 2.1kB style/octocat-dark.svg
npm notice 2.1kB style/octocat-light.svg
npm notice === Tarball Details ===
npm notice name: @jupyterlab/github
npm notice version: 2.0.0
npm notice filename: jupyterlab-github-2.0.0.tgz
npm notice package size: 54.3 kB
npm notice unpacked size: 113.9 kB
npm notice shasum: ca86cba6c136b9b3b138b1c8f7c50e576630e650
npm notice integrity: sha512-OeE6CUicyqg1p[...]/FxdT+/s8b/WQ==
npm notice total files: 17
npm notice
jupyterlab-github-2.0.0.tgz

Node v12.16.3

Yarn configuration loaded.
Building jupyterlab assets (build:prod:minimize)

node /Users/spencer/software/anaconda3/lib/python3.7/site-packages/jupyterlab/staging/yarn.js install --non-interactive
yarn install v1.21.1
[1/5] Validating package.json...
[2/5] Resolving packages...
[3/5] Fetching packages...
error An unexpected error occurred: "https://registry.npm.taobao.org/@fortawesome/fontawesome-free/-/fontawesome-free-5.13.0.tgz: Request failed "404 Not Found"".
info If you think this is a bug, please open a bug report with the information provided in "/Users/spencer/software/anaconda3/share/jupyter/lab/staging/yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

npm dependencies failed to install
Traceback (most recent call last):

File "/Users/spencer/software/anaconda3/lib/python3.7/site-packages/jupyterlab/debuglog.py", line 47, in debug_logging
yield

File "/Users/spencer/software/anaconda3/lib/python3.7/site-packages/jupyterlab/labextensions.py", line 105, in start
command=command, app_options=app_options)

File "/Users/spencer/software/anaconda3/lib/python3.7/site-packages/jupyterlab/commands.py", line 460, in build
command=command, clean_staging=clean_staging)

File "/Users/spencer/software/anaconda3/lib/python3.7/site-packages/jupyterlab/commands.py", line 652, in build
raise RuntimeError(msg)

RuntimeError: npm dependencies failed to install

Exiting application: jupyter