text: Title: v2.8
  Body: yarn install v1.22.10
  [1/4] Resolving packages...
  success Already up-to-date.
  Done in 0.46s.
  yarn run v1.22.10
  $ tsc && jupyter labextension build .
  Please supply at least one subcommand: check, disable, enable, install, link, list, uninstall, unlink
  error Command failed with exit code 1.
  info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
  Traceback (most recent call last):
    File "setup.py", line 300, in <module>
      _setup()
    File "setup.py", line 142, in _setup
      'develop': Develop,