Rasa init breaks on Windows/Mac/Ubuntu due to CompositionView in Sanic.

[koaning]

Just got notified from my Rasa install Cron. It seems on Monday 27th Dec 2021 all of the rasa init calls break. Here's the traceback:

> python -m rasa init --no-prompt
Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/__main__.py", line 14, in <module>
    from rasa.cli import (
  File "/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/cli/export.py", line 9, in <module>
    import rasa.core.utils
  File "/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/core/utils.py", line 25, in <module>
    from sanic.views import CompositionView
ImportError: cannot import name 'CompositionView' from 'sanic.views' (/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/sanic/views.py)

I can also confirm on pypi that Sanic just released a new version (v21.12.0) on the 26th.

[koaning]

From the release notes I can confirm that the CompositionView has indeed been deprecated.

The short term solution is to ensure Rasa does not use this version of Sanic, a longer-term solution would involve us removing the view from Rasa.

[afzalmushtaque]

pip install sanic==21.9.3 works for now...

[koaning]

Bit of a side-track. I've noticed that this error is also raised when I'm running the train command. The traceback is interesting though.

Traceback:
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/test_featurizers/test_sparse_tfidf.py:9: in <module>
    from rasa.nlu.tokenizers.whitespace_tokenizer import WhitespaceTokenizer
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/nlu/tokenizers/whitespace_tokenizer.py:10: in <module>
    from rasa.engine.recipes.default_recipe import DefaultV1Recipe
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/engine/recipes/default_recipe.py:24: in <module>
    from rasa.engine.constants import (
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/engine/constants.py:3: in <module>
    from rasa.core.channels import UserMessage
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/core/channels/__init__.py:15: in <module>
    from rasa.core.channels.console import CmdlineInput  # noqa: F401
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/core/channels/console.py:17: in <module>
    from rasa.core import utils
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/core/utils.py:25: in <module>
    from sanic.views import CompositionView
E   ImportError: cannot import name 'CompositionView' from 'sanic.views' 

It seems that when we're importing the WhitespaceTokenizer we're eventually depending on sanic. That feels a bit strange, why is the machine learning pipeline depending on a web-serving framework?

[Akilankm]

I also had the same problem, using specific version of sanic did the trick for me...
pip install sanic==21.9.3

[afzalmushtaque]

Bit of a side-track. I've noticed that this error is also raised when I'm running the train command. The traceback is interesting though.

Traceback:
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/test_featurizers/test_sparse_tfidf.py:9: in <module>
    from rasa.nlu.tokenizers.whitespace_tokenizer import WhitespaceTokenizer
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/nlu/tokenizers/whitespace_tokenizer.py:10: in <module>
    from rasa.engine.recipes.default_recipe import DefaultV1Recipe
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/engine/recipes/default_recipe.py:24: in <module>
    from rasa.engine.constants import (
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/engine/constants.py:3: in <module>
    from rasa.core.channels import UserMessage
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/core/channels/__init__.py:15: in <module>
    from rasa.core.channels.console import CmdlineInput  # noqa: F401
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/core/channels/console.py:17: in <module>
    from rasa.core import utils
/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/site-packages/rasa/core/utils.py:25: in <module>
    from sanic.views import CompositionView
E   ImportError: cannot import name 'CompositionView' from 'sanic.views' 

It seems that when we're importing the WhitespaceTokenizer we're eventually depending on sanic. That feels a bit strange, why is the machine learning pipeline depending on a web-serving framework?

The list_routes function probably belongs in rasa.utils rather than rasa.core.utils...

[jonra1993]

I have the same error. I have installed rasa 3.0.4 and tried to create a new rasa project using. For now Rasa CLI is broken due to no commands work.

poetry add "rasa[full]"
rasa init

[ahopkins]

Composition View was deprecated since v21.6 and removed in v21.12 as stated above.
https://sanicframework.org/en/guide/release-notes/v21.6.html#deprecation-of-compositionview

[disfeng]

pip install sanic==21.9.3 works for now...

It's work!

[AbhijeetGavali]

it's not working when I try to deploy it on heroku

Could not find a version that satisfies the requirement sanic==21.9.3 (from versions: 0.1.0, 0.1.1, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.2.0, 0.3.0, 0.3.1, 0.4.0, 0.4.1, 0.5.0, 0.5.1, 0.5.2, 0.5.4, 0.6.0, 0.7.0, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 18.12.0, 19.3.1, 19.6.0, 19.6.2, 19.6.3, 19.9.0, 19.12.0, 19.12.2, 19.12.3, 19.12.4, 19.12.5, 20.3.0, 20.6.0, 20.6.1, 20.6.2, 20.6.3, 20.9.0, 20.9.1, 20.12.0, 20.12.1, 20.12.2, 20.12.3, 20.12.4)
ERROR: No matching distribution found for sanic==21.9.3
The command '/bin/sh -c apt-get update && apt-get install -y python3 python3-pip && python3 -m pip install --no-cache --upgrade pip && pip3 install --no-cache rasa && pip install sanic==21.9.3' returned a non-zero code: 1

what should I suppose to do?

[ahopkins]

Looks like there already is a PR to fix this: #10590

[m-vdb]

This is now fixed in Rasa 3.0.9 🎉