bench get-app installing

[malnozili]

We are trying to install app on site to try its functionality
but getting this issue, how can we solve it?

$ bench build --app barista
/home/malnozili/.pyenv/versions/3.9.0/lib/python3.9/runpy.py:111: UserWarning:
frappe package is installed from PyPI, which isn't supported. Please install frappe using frappe bench or docker images.

• https://github.com/frappe/bench

• https://github.com/frappe/frappe_docker

  import(pkg_name)
  /home/malnozili/erpnext/vm/v13/v13-bench/env/bin/python: Error while finding module specification for 'frappe.utils.bench_helper' (ModuleNotFoundError: No module named 'frappe.utils')

/home/malnozili/.pyenv/versions/3.9.0/lib/python3.9/runpy.py:111: UserWarning:
frappe package is installed from PyPI, which isn't supported. Please install frappe using frappe bench or docker images.

• https://github.com/frappe/bench

• https://github.com/frappe/frappe_docker

  import(pkg_name)
  /home/malnozili/erpnext/vm/v13/v13-bench/env/bin/python: Error while finding module specification for 'frappe.utils.bench_helper' (ModuleNotFoundError: No module named 'frappe.utils')
  ERROR:
  Traceback (most recent call last):
  File "/home/malnozili/.local/bin/bench", line 8, in
  sys.exit(cli())
  File "/home/malnozili/.local/lib/python3.10/site-packages/bench/cli.py", line 127, in cli
  bench_command()
  File "/usr/lib/python3/dist-packages/click/core.py", line 764, in call
  return self.main(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/click/core.py", line 717, in main
  rv = self.invoke(ctx)
  File "/usr/lib/python3/dist-packages/click/core.py", line 1137, in invoke
  return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/lib/python3/dist-packages/click/core.py", line 956, in invoke
  return ctx.invoke(self.callback, **ctx.params)
  File "/usr/lib/python3/dist-packages/click/core.py", line 555, in invoke
  return callback(*args, **kwargs)
  File "/home/malnozili/.local/lib/python3.10/site-packages/bench/commands/make.py", line 159, in get_app
  get_app(
  File "/home/malnozili/.local/lib/python3.10/site-packages/bench/app.py", line 444, in get_app
  app.install(verbose=verbose, skip_assets=skip_assets, restart_bench=restart_bench)
  File "/home/malnozili/.local/lib/python3.10/site-packages/bench/utils/render.py", line 126, in wrapper_fn
  return fn(*args, **kwargs)
  File "/home/malnozili/.local/lib/python3.10/site-packages/bench/app.py", line 242, in install
  install_app(
  File "/home/malnozili/.local/lib/python3.10/site-packages/bench/app.py", line 586, in install_app
  build_assets(bench_path=bench_path, app=app)
  File "/home/malnozili/.local/lib/python3.10/site-packages/bench/utils/bench.py", line 345, in build_assets
  exec_cmd(command, cwd=bench_path, env={"BENCH_DEVELOPER": "1"})
  File "/home/malnozili/.local/lib/python3.10/site-packages/bench/utils/init.py", line 158, in exec_cmd
  raise CommandFailedError
  bench.exceptions.CommandFailedError
  INFO: A newer version of bench is available: 5.16.0 → 5.17.2