Running scrapy will get the error message:

Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 568,
in _build_master
    ws.require(__requires__)
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 886,
in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 777,
in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (h2 4.0.0
(/usr/lib/python3.9/site-packages), Requirement.parse('h2<4.0,>=3.0'),
{'Scrapy'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/scrapy", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 3243,
in <module>
    def _initialize_master_working_set():
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 3226,
in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 3255,
in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 570,
in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 583,
in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 772,
in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'h2<4.0,>=3.0' distribution was not
found and is required by Scrapy