Error while 'tutor local quickstart'

Hi. What am I missing?

edu4world /opt/openedx # pwd
/opt/openedx
edu4world /opt/openedx # grep -i version /etc/os-release
VERSION="20.04.5 LTS (Focal Fossa)"
VERSION_ID="20.04"
VERSION_CODENAME=focal
edu4world /opt/openedx # tutor --version
tutor, version 14.2.1
edu4world /opt/openedx # tutor local quickstart
⚠️  You are running Tutor as root. This is strongly not recommended. If you are doing this in order to access the Docker daemon, you should instead add your user to the 'docker' group. (see https://docs.docker.com/install/linux/linux-postinstall/#manage-docker-as-a-non-root-user)
==================================================
        Interactive platform configuration
==================================================
Are you configuring a production platform? Type 'n' if you are just testing Tutor on your local computer [Y/n]
Your website domain name for students (LMS) [www.myopenedx.com] edu4world.online
Your website domain name for teachers (CMS) [studio.edu4world.online]
Your platform name/title [My Open edX] PSTFIT edX
Your public contact email address [contact@edu4world.online] oleksiibychkov@knu.ua
The default language code for the platform [en]
Activate SSL/TLS certificates for HTTPS access? Important note: this will NOT work in a development environment. [y/N]
Configuration saved to /root/.local/share/tutor/config.yml
Error rendering template apps/openedx/settings/cms/development.py
Traceback (most recent call last):
  File "/usr/local/bin/tutor", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.8/dist-packages/tutor/commands/cli.py", line 24, in main
    cli()  # pylint: disable=no-value-for-parameter
  File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/click/decorators.py", line 26, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/tutor/commands/local.py", line 119, in quickstart
    tutor_env.save(context.obj.root, config)
  File "/usr/local/lib/python3.8/dist-packages/tutor/env.py", line 252, in save
    save_all_from(src, os.path.join(root_env, dst), config)
  File "/usr/local/lib/python3.8/dist-packages/tutor/env.py", line 270, in save_all_from
    renderer.render_all_to(dst, prefix.replace(os.sep, "/"))
  File "/usr/local/lib/python3.8/dist-packages/tutor/env.py", line 200, in render_all_to
    rendered = self.render_template(template_name)
  File "/usr/local/lib/python3.8/dist-packages/tutor/env.py", line 187, in render_template
    return self.__render(template)
  File "/usr/local/lib/python3.8/dist-packages/tutor/env.py", line 206, in __render
    return template.render(**self.config)
  File "/usr/local/lib/python3.8/dist-packages/jinja2/environment.py", line 989, in render
    return self.environment.handle_exception(exc_info, True)
  File "/usr/local/lib/python3.8/dist-packages/jinja2/environment.py", line 754, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.8/dist-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "/usr/local/lib/python3.8/dist-packages/tutor/templates/apps/openedx/settings/partials/common_all.py", line 122, in <module>
    {% set jwt_rsa_key | rsa_import_key %}{{ JWT_RSA_PRIVATE_KEY }}{% endset %}
  File "/usr/local/lib/python3.8/dist-packages/jinja2/environment.py", line 986, in render
    return concat(self.root_render_func(self.new_context(vars)))
  File "/usr/local/lib/python3.8/dist-packages/tutor/templates/apps/openedx/settings/cms/development.py", line 14, in <module>
    {% include "apps/openedx/settings/partials/common_cms.py" %}
  File "/usr/local/lib/python3.8/dist-packages/tutor/templates/apps/openedx/settings/partials/common_cms.py", line 1, in <module>
    {% include "apps/openedx/settings/partials/common_all.py" %}
  File "/usr/local/lib/python3.8/dist-packages/jinja2/environment.py", line 754, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.8/dist-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "/usr/local/lib/python3.8/dist-packages/tutor/templates/apps/openedx/settings/partials/common_all.py", line 122, in <module>
    {% set jwt_rsa_key | rsa_import_key %}{{ JWT_RSA_PRIVATE_KEY }}{% endset %}
  File "/usr/local/lib/python3.8/dist-packages/jinja2/environment.py", line 470, in _parse
    return Parser(self, source, name, encode_filename(filename)).parse()
  File "/usr/local/lib/python3.8/dist-packages/jinja2/parser.py", line 897, in parse
    result = nodes.Template(self.subparse(), lineno=1)
  File "/usr/local/lib/python3.8/dist-packages/jinja2/parser.py", line 879, in subparse
    rv = self.parse_statement()
  File "/usr/local/lib/python3.8/dist-packages/jinja2/parser.py", line 121, in parse_statement
    return getattr(self, 'parse_' + self.stream.current.value)()
  File "/usr/local/lib/python3.8/dist-packages/jinja2/parser.py", line 174, in parse_set
    body = self.parse_statements(('name:endset',),
  File "/usr/local/lib/python3.8/dist-packages/jinja2/parser.py", line 155, in parse_statements
    self.stream.expect('block_end')
  File "/usr/local/lib/python3.8/dist-packages/jinja2/lexer.py", line 371, in expect
    raise TemplateSyntaxError("expected token %r, got %r" %
jinja2.exceptions.TemplateSyntaxError: expected token 'end of statement block', got '|'
edu4world /opt/openedx #

It looks like you are running an old version of Jinja2. What is the output of pip freeze | grep -i jinja? We may have to specify a minimum version in the tutor requirements.

the output is
Jinja2==2.8
what should it be?

You need at least jinja2 2.10 to support this control structure: Template Designer Documentation — Jinja Documentation (2.11.x)

Starting with Jinja 2.10, the block assignment supports filters.

I’ll update the tutor requirements now: fix: TemplateSyntaxError with old jinja2 by regisb · Pull Request #748 · overhangio/tutor · GitHub

Thank you, that seem to have solved the problem.
At least, setup is now proceeding.