After update conda does not work showing the error "module 'brotli' has no attribute" #9903

fabosilva · 2020-04-30T13:39:08Z

After update does not access anancona, IDE spyder. I can't go back to the last review of the conda.

Conda info:

Traceback (most recent call last):
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\exceptions.py", line 1079, in __call__
    return func(*args, **kwargs)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\cli\main.py", line 84, in _main
    exit_code = do_call(args, p)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\cli\conda_argparse.py", line 80, in do_call
    module = import_module(relative_mod, __name__.rsplit('.', 1)[0])
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\cli\main_info.py", line 19, in <module>
    from ..core.index import _supplement_index_with_system
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\core\index.py", line 10, in <module>
    from .package_cache_data import PackageCacheData
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\core\package_cache_data.py", line 15, in <module>
    from .path_actions import CacheUrlAction, ExtractPackageAction
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\core\path_actions.py", line 30, in <module>
    from ..gateways.connection.download import download
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\gateways\connection\__init__.py", line 21, in <module>
    from requests import ConnectionError, HTTPError, Session
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\requests\__init__.py", line 43, in <module>
    import urllib3
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\__init__.py", line 7, in <module>
    from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connectionpool.py", line 39, in <module>
    from .response import HTTPResponse
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\response.py", line 155, in <module>
    class HTTPResponse(io.IOBase):
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\response.py", line 377, in HTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\Scripts\conda-script.py", line 12, in <module>
    sys.exit(main())
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\cli\main.py", line 150, in main
    return conda_exception_handler(_main, *args, **kwargs)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\exceptions.py", line 1371, in conda_exception_handler
    return_value = exception_handler(func, *args, **kwargs)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\exceptions.py", line 1082, in __call__
    return self.handle_exception(exc_val, exc_tb)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\exceptions.py", line 1126, in handle_exception
    return self.handle_unexpected_exception(exc_val, exc_tb)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\exceptions.py", line 1141, in handle_unexpected_exception
    self._execute_upload(error_report)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\exceptions.py", line 1303, in _execute_upload
    'User-Agent': self.user_agent,
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\exceptions.py", line 1101, in user_agent
    return context.user_agent
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\_vendor\auxlib\decorators.py", line 268, in new_fget
    cache[inner_attname] = func(self)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\base\context.py", line 737, in user_agent
    builder = ["conda/%s requests/%s" % (CONDA_VERSION, self.requests_version)]
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\_vendor\auxlib\decorators.py", line 268, in new_fget
    cache[inner_attname] = func(self)
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\conda\base\context.py", line 748, in requests_version
    from requests import __version__ as REQUESTS_VERSION
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\requests\__init__.py", line 43, in <module>
    import urllib3
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\__init__.py", line 7, in <module>
    from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connectionpool.py", line 39, in <module>
    from .response import HTTPResponse
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\response.py", line 155, in <module>
    class HTTPResponse(io.IOBase):
  File "C:\Users\fbonadias\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\response.py", line 377, in HTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'

conda config --show-sources:

==> C:\Users\fbonadias.condarc <==
default_python: None
ssl_verify: True
channels:

defaults

conda list:

The text was updated successfully, but these errors were encountered:

arohanajit · 2020-05-03T14:33:30Z

Same for me. I was faced with qt installation issues: ContinuumIO/anaconda-issues#10949
After which I tried updating conda and installing matplotlib through pip. Now no installation commands run and am faced with this error.

eeyrjmr · 2020-05-05T00:36:24Z

I have just faced this. Looking in the site-packages directory under brotli it can be seen that conda has emptied it.

I edited site-packages\pip_vendor\urllib3\response.py at line 376 and commented out the Brotli check. This allowed my todo a pip install brotli to recover my environment.

This is a workaround and does not explain why it happened or how it should be fixed

thinkboxer · 2020-05-06T22:11:28Z

I had the same problem. I am pretty new to all this and eeyrjmr's workaround did not work for me or I did not find how to make it work.
So I did a full uninstall and installed anaconda again. I have nagging double tabs in the Windows 10 start pane now :

(Anaconda Navigator / Anaconda Navigator (anaconda3)
Anaconda Powershell Prompt / Anaconda Powershell prompt (anaconda3) ...

But I can launch Jupiter Labs again.

eeyrjmr · 2020-05-06T23:26:46Z

its a bit more sinister then just brotli... numpy (and a few other packages) were in a state of uninstall.

i ended up doing an uninstall and a fresh install since some form up update corrupted the install

fabosilva · 2020-05-07T21:17:54Z

I had the same problem. I am pretty new to all this and eeyrjmr's workaround did not work for me or I did not find how to make it work.
So I did a full uninstall and installed anaconda again. I have nagging double tabs in the Windows 10 start pane now :

(Anaconda Navigator / Anaconda Navigator (anaconda3)
Anaconda Powershell Prompt / Anaconda Powershell prompt (anaconda3) ...

But I can launch Jupiter Labs again.

I am also a beginner, however I believe it is only to delete the old tabs.

psnh22 · 2020-05-19T01:07:42Z

Is there any solution other than uninstalling? I am having the same issue.

fabosilva · 2020-05-19T12:57:23Z

Is there any solution other than uninstalling? I am having the same issue.

I couldn't solve it, I tried the eeyrjmr procedure but it didn't work. Uninstall and install again

nickcorona · 2020-05-27T16:46:52Z

Man, this is really annoying. It's turning me off from using conda.

jayveesea · 2020-05-29T10:15:45Z

I had this same problem, @eeyrjmr solution seems to work for me. One caveat, the path was site-packages\pip\_vendor\urllib3\response.py. I'm curious if any additional actions should be taken once the brotli issue is resolved.

MishraSubash · 2020-05-29T21:07:05Z

Is there any solution other than uninstalling? I am having the same issue.

I couldn't solve it, I tried the eeyrjmr procedure but it didn't work. Uninstall and install again

does re-installation fixed your issue?

fabosilva · 2020-05-31T13:45:27Z

Is there any solution other than uninstalling? I am having the same issue.

I couldn't solve it, I tried the eeyrjmr procedure but it didn't work. Uninstall and install again

does re-installation fixed your issue?

fabosilva · 2020-05-31T13:47:38Z

Is there any solution other than uninstalling? I am having the same issue.

I couldn't solve it, I tried the eeyrjmr procedure but it didn't work. Uninstall and install again

does re-installation fixed your issue?

Fixed the problem, but to use spyder 4.13 with the packages I use, I installed anaconda 2019.07 with the custom version. Using version 2020/02 and updating the conda, it is not possible to use syper 4.13., Even creating different envs.

xhuyvn · 2020-06-03T02:32:35Z

Hi,
I had the same issue after run "conda update conda anaconda", It show error beblow.
File "D:\Anaconda3\lib\site-packages\urllib3\response.py", line 135, in <module> class HTTPResponse(io.IOBase): File "D:\Anaconda3\lib\site-packages\urllib3\response.py", line 357, in HTTPResponse DECODER_ERROR_CLASSES += (brotli.error,) AttributeError: module "brotli" has no attribute 'error'

My solution is: open file "Anaconda3\lib\site-packages\urllib3\response.py", find the code below
DECODER_ERROR_CLASSES = (IOError, zlib.error) if brotli is not None: DECODER_ERROR_CLASSES += (brotli.error,)
and update it to
DECODER_ERROR_CLASSES = (IOError, zlib.error)
Run anaconda navigator again.

AJSchiller · 2020-06-03T09:47:48Z

I had the same problem as the OP, tried @eeyrjmr 's solution, then got the same traceback as @xhuyvn , tried that solution as well and now things seem to be working as normal.
Thanks for the help guys!

heraclitusq · 2020-06-21T07:30:51Z

Encountered the same issue after upgrading the conda base python version from 3.7 to 3.8 on windows10 today.

What I did to solve this problem:

Edit the response.py file referred in the traceback info. Comment out the import brotli part and manually set it to None:

#try:
#    import brotli
#except ImportError:
#    brotli = None
brotli = None

From command line, update conda: conda update conda.
This will prompt to install brotlipy. Descriptions on my computer:

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    brotlipy-0.7.0             |py38he774522_1000         338 KB
    ------------------------------------------------------------
                                           Total:         338 KB

The following NEW packages will be INSTALLED:

  brotlipy           pkgs/main/win-64::brotlipy-0.7.0-py38he774522_1000

The following packages will be UPDATED:

  urllib3            pkgs/main/win-64::urllib3-1.25.8-py38~ --> pkgs/main/noarch::urllib3-1.25.9-py_0

This is it. If you don't want to conda update conda. conda install brotlipy should do the trick as well I think. The response.py file gets overwritten by the update, so no need to revert it.

Shamik2209 · 2020-06-21T15:13:57Z

@xhuyvn Thanks a lot. This worked. Do you think this is a glitch from the Anaconda developers?

Shamik2209 · 2020-06-21T15:16:19Z

Your solution works alright. Thanks again @xhuyvn . But how did you come up with this almost impossible solution?

xhuyvn · 2020-06-27T03:34:43Z

Your solution works alright. Thanks again @xhuyvn . But how did you come up with this almost impossible solution?

Hi,

I glad when my solution could help you. Python is free, sometimes, many guys work in the same project and the environment is not the same. When they combining the code for publishing a new version may not work for all environment. With my experiment in the C# project management, just find the conflict and fix it. The easy way is to change the code to avoid the runtime conflict, but it will have risk maybe we don't know it yet.

taherib · 2020-06-27T21:54:38Z

I had the same issue, all I had to do was to run the following:

activate myVirtualEnv
conda install brotlipy

and that fixed the issue, I did not have to edit "response.py"

oke-aditya · 2020-07-02T10:32:30Z

Finding this issue on My PC too .

Encountered the same issue after upgrading the conda base python version from 3.7 to 3.8 on windows10 today.

What I did to solve this problem:

1. Edit the `response.py` file referred in the traceback info. Comment out the `import brotli` part and manually set it to `None`:

#try:
#    import brotli
#except ImportError:
#    brotli = None
brotli = None

1. From command line, update conda: `conda update conda`.
   This will prompt to install `brotlipy`. Descriptions on my computer:

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    brotlipy-0.7.0             |py38he774522_1000         338 KB
    ------------------------------------------------------------
                                           Total:         338 KB

The following NEW packages will be INSTALLED:

  brotlipy           pkgs/main/win-64::brotlipy-0.7.0-py38he774522_1000

The following packages will be UPDATED:

  urllib3            pkgs/main/win-64::urllib3-1.25.8-py38~ --> pkgs/main/noarch::urllib3-1.25.9-py_0

This is it. If you don't want to conda update conda. conda install brotlipy should do the trick as well I think. The response.py file gets overwritten by the update, so no need to revert it.

This solved my problem. It happens when you update to Python 3.8 from python 3.6 or python 3.7

dddanny79 · 2020-07-05T09:11:56Z

Hi,
I had the same issue after run "conda update conda anaconda", It show error beblow.
File "D:\Anaconda3\lib\site-packages\urllib3\response.py", line 135, in <module> class HTTPResponse(io.IOBase): File "D:\Anaconda3\lib\site-packages\urllib3\response.py", line 357, in HTTPResponse DECODER_ERROR_CLASSES += (brotli.error,) AttributeError: module "brotli" has no attribute 'error'

My solution is: open file "Anaconda3\lib\site-packages\urllib3\response.py", find the code below
DECODER_ERROR_CLASSES = (IOError, zlib.error) if brotli is not None: DECODER_ERROR_CLASSES += (brotli.error,)
and update it to
DECODER_ERROR_CLASSES = (IOError, zlib.error)
Run anaconda navigator again.

Perfect... solved the problem for me as well !

Thanks @xhuyvn

* Tee output from conda info for improved diagnostics. * Workaround for conda/conda#9903. * Use pip for workaround. * Workaround in CI YAML instead. * Add brotli to CI YAML directly. * Apply workaround to Selenium CI as well.

* Add DevSkim scanning (#659) Co-authored-by: Cassandra Granade <chgranad@microsoft.com> * Tee output from conda info for improved diagnostics. * Workaround for conda/conda#9903. * Use pip for workaround. * Workaround in CI YAML instead. * Add brotli to CI YAML directly. * Apply workaround to Selenium CI as well. * Trivial change to invalidate build. Co-authored-by: Angela Burton <anjbur@users.noreply.github.com>

github-actions · 2022-07-18T04:23:39Z

Hi there, thank you for your contribution!

This issue has been automatically marked as stale because it has not had recent activity. It will be closed automatically if no further activity occurs.

If you would like this issue to remain open please:

Verify that you can still reproduce the issue at hand
Comment that the issue is still reproducible and include:
- What OS and version you reproduced the issue on
- What steps you followed to reproduce the issue

NOTE: If this issue was closed prematurely, please leave a comment.

Thanks!

jens-k · 2023-05-30T10:52:11Z

I encountered the same issue today on a Windows 10 machine after updating conda (miniconda).

(base) C:\Users\Jens>jupyter lab
Traceback (most recent call last):
  File "C:\Users\Jens\miniconda3\lib\runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "C:\Users\Jens\miniconda3\lib\runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "C:\Users\Jens\miniconda3\Scripts\jupyter-lab.EXE\__main__.py", line 4, in <module>
  File "C:\Users\Jens\miniconda3\lib\site-packages\jupyterlab\__init__.py", line 7, in <module>
    from .handlers.announcements import (  # noqa
  File "C:\Users\Jens\miniconda3\lib\site-packages\jupyterlab\handlers\announcements.py", line 15, in <module>
    from jupyterlab_server.translation_utils import translator
  File "C:\Users\Jens\miniconda3\lib\site-packages\jupyterlab_server\__init__.py", line 5, in <module>
    from .app import LabServerApp
  File "C:\Users\Jens\miniconda3\lib\site-packages\jupyterlab_server\app.py", line 10, in <module>
    from .handlers import LabConfig, add_handlers
  File "C:\Users\Jens\miniconda3\lib\site-packages\jupyterlab_server\handlers.py", line 18, in <module>
    from .listings_handler import ListingsHandler, fetch_listings
  File "C:\Users\Jens\miniconda3\lib\site-packages\jupyterlab_server\listings_handler.py", line 8, in <module>
    import requests
  File "C:\Users\Jens\miniconda3\lib\site-packages\requests\__init__.py", line 43, in <module>
    import urllib3
  File "C:\Users\Jens\miniconda3\lib\site-packages\urllib3\__init__.py", line 17, in <module>
    from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
  File "C:\Users\Jens\miniconda3\lib\site-packages\urllib3\connectionpool.py", line 14, in <module>
    from ._request_methods import RequestMethods
  File "C:\Users\Jens\miniconda3\lib\site-packages\urllib3\_request_methods.py", line 10, in <module>
    from .response import BaseHTTPResponse
  File "C:\Users\Jens\miniconda3\lib\site-packages\urllib3\response.py", line 277, in <module>
    class BaseHTTPResponse(io.IOBase):
  File "C:\Users\Jens\miniconda3\lib\site-packages\urllib3\response.py", line 287, in BaseHTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'

This workaround solved it for me, but I guess it's not intended behavior.

ruilvo · 2023-05-31T07:54:53Z

Downloaded miniconda Miniconda3-py310_23.3.1-0-Windows-x86_64.exe, updated conda with conda update -n base -c defaults conda and after that I started getting the error as described:

  File "[...]\miniconda3\lib\site-packages\urllib3\response.py", line 287, in BaseHTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'

Commented lines 286 and 287 as described on the workarounds.

This needs to be opened again.

xeoslaenor · 2023-06-07T07:45:39Z

I have the same problem (conda update breaks miniconda on last version) and the workaround above has solved the problem for me too

jezdez · 2023-06-07T08:39:57Z

@xeoslaenor Could you please elaborate what version of conda and miniconda you used? I'm trying to investigate whether this is a regression or not.

aym00 · 2023-06-07T21:50:07Z

I have the same problem having just installed Mambaforge-23.1.0-1-Windows-x86_64.exe and run

conda update -n base -c conda-forge conda

I'm running on Microsoft Windows [Version 10.0.19044.2965], here's the console output from the update and resulting error:

(base) C:\Users\username>conda update -n base -c conda-forge conda
Collecting package metadata (current_repodata.json): done
Solving environment: done

## Package Plan ##

  environment location: C:\Users\username\mambaforge

  added / updated specs:
    - conda


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    boltons-23.0.0             |     pyhd8ed1ab_0         296 KB  conda-forge
    conda-23.3.1               |  py310h5588dad_0         947 KB  conda-forge
    conda-package-streaming-0.8.0|     pyhd8ed1ab_0          18 KB  conda-forge
    cryptography-41.0.1        |  py310h6e82f81_0         1.0 MB  conda-forge
    jsonpatch-1.32             |     pyhd8ed1ab_0          14 KB  conda-forge
    jsonpointer-2.0            |             py_0           9 KB  conda-forge
    libarchive-3.6.2           |       h6f8411a_1         938 KB  conda-forge
    libsolv-0.7.24             |       h12be248_0         417 KB  conda-forge
    libssh2-1.11.0             |       h7dfc565_0         261 KB  conda-forge
    libxml2-2.11.4             |       hc3477c8_0         1.6 MB  conda-forge
    packaging-23.1             |     pyhd8ed1ab_0          45 KB  conda-forge
    pyopenssl-23.2.0           |     pyhd8ed1ab_1         126 KB  conda-forge
    ruamel.yaml-0.17.31        |  py310h8d17308_0         193 KB  conda-forge
    ------------------------------------------------------------
                                           Total:         5.8 MB

The following NEW packages will be INSTALLED:

  boltons            conda-forge/noarch::boltons-23.0.0-pyhd8ed1ab_0
  brotli             conda-forge/win-64::brotli-1.0.9-hcfcfb64_8
  brotli-bin         conda-forge/win-64::brotli-bin-1.0.9-hcfcfb64_8
  jsonpatch          conda-forge/noarch::jsonpatch-1.32-pyhd8ed1ab_0
  jsonpointer        conda-forge/noarch::jsonpointer-2.0-py_0
  libbrotlicommon    conda-forge/win-64::libbrotlicommon-1.0.9-hcfcfb64_8
  libbrotlidec       conda-forge/win-64::libbrotlidec-1.0.9-hcfcfb64_8
  libbrotlienc       conda-forge/win-64::libbrotlienc-1.0.9-hcfcfb64_8
  packaging          conda-forge/noarch::packaging-23.1-pyhd8ed1ab_0
  vc14_runtime       conda-forge/win-64::vc14_runtime-14.34.31931-h5081d32_16

The following packages will be REMOVED:

  brotlipy-0.7.0-py310h8d17308_1005

The following packages will be UPDATED:

  ca-certificates                      2022.12.7-h5b45459_0 --> 2023.5.7-h56e8100_0
  certifi                            2022.12.7-pyhd8ed1ab_0 --> 2023.5.7-pyhd8ed1ab_0
  conda                              23.1.0-py310h5588dad_0 --> 23.3.1-py310h5588dad_0
  conda-package-str~                     0.7.0-pyhd8ed1ab_1 --> 0.8.0-pyhd8ed1ab_0
  cryptography                       40.0.1-py310h6e82f81_0 --> 41.0.1-py310h6e82f81_0
  libarchive                               3.6.2-h27c7867_0 --> 3.6.2-h6f8411a_1
  libsolv                                 0.7.23-h12be248_0 --> 0.7.24-h12be248_0
  libsqlite                               3.40.0-hcfcfb64_0 --> 3.42.0-hcfcfb64_0
  libssh2                                 1.10.0-h9a1e1f7_3 --> 1.11.0-h7dfc565_0
  libxml2                                 2.10.3-hc3477c8_6 --> 2.11.4-hc3477c8_0
  openssl                                  3.1.0-hcfcfb64_0 --> 3.1.1-hcfcfb64_1
  pyopenssl                             23.1.1-pyhd8ed1ab_0 --> 23.2.0-pyhd8ed1ab_1
  requests                              2.28.2-pyhd8ed1ab_1 --> 2.31.0-pyhd8ed1ab_0
  ruamel.yaml                       0.17.21-py310h8d17308_3 --> 0.17.31-py310h8d17308_0
  urllib3                              1.26.15-pyhd8ed1ab_0 --> 2.0.3-pyhd8ed1ab_0
  vc                                       14.3-hb6edc58_10 --> 14.3-hb25d44b_16
  vs2015_runtime                    14.34.31931-h4c5c07a_10 --> 14.34.31931-hed1258a_16


Proceed ([y]/n)? y


Downloading and Extracting Packages

Preparing transaction: done
Verifying transaction: done
Executing transaction: done

(base) C:\Users\username>conda config
Traceback (most recent call last):
  File "C:\Users\username\mambaforge\lib\site-packages\conda\exceptions.py", line 1132, in __call__
    return func(*args, **kwargs)
  File "C:\Users\username\mambaforge\lib\site-packages\conda\cli\main.py", line 57, in main_subshell
    p = generate_parser()
  File "C:\Users\username\mambaforge\lib\site-packages\conda\cli\conda_argparse.py", line 63, in generate_parser
    p = ArgumentParser(
  File "C:\Users\username\mambaforge\lib\site-packages\conda\cli\conda_argparse.py", line 148, in __init__
    self._subcommands = context.plugin_manager.get_hook_results("subcommands")
  File "C:\Users\username\mambaforge\lib\site-packages\conda\base\context.py", line 419, in plugin_manager
    from ..plugins.manager import get_plugin_manager
  File "C:\Users\username\mambaforge\lib\site-packages\conda\plugins\__init__.py", line 3, in <module>
    from .hookspec import hookimpl  # noqa: F401
  File "C:\Users\username\mambaforge\lib\site-packages\conda\plugins\hookspec.py", line 10, in <module>
    from .types import CondaSolver, CondaSubcommand, CondaVirtualPackage
  File "C:\Users\username\mambaforge\lib\site-packages\conda\plugins\types.py", line 6, in <module>
    from ..core.solve import Solver
  File "C:\Users\username\mambaforge\lib\site-packages\conda\core\solve.py", line 19, in <module>
    from .index import get_reduced_index, _supplement_index_with_system
  File "C:\Users\username\mambaforge\lib\site-packages\conda\core\index.py", line 15, in <module>
    from .package_cache_data import PackageCacheData
  File "C:\Users\username\mambaforge\lib\site-packages\conda\core\package_cache_data.py", line 22, in <module>
    from .path_actions import CacheUrlAction, ExtractPackageAction
  File "C:\Users\username\mambaforge\lib\site-packages\conda\core\path_actions.py", line 28, in <module>
    from ..gateways.connection.download import download
  File "C:\Users\username\mambaforge\lib\site-packages\conda\gateways\connection\__init__.py", line 6, in <module>
    from requests import ConnectionError, HTTPError, Session
  File "C:\Users\username\mambaforge\lib\site-packages\requests\__init__.py", line 43, in <module>
    import urllib3
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\__init__.py", line 17, in <module>
    from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\connectionpool.py", line 14, in <module>
    from ._request_methods import RequestMethods
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\_request_methods.py", line 10, in <module>
    from .response import BaseHTTPResponse
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\response.py", line 282, in <module>
    class BaseHTTPResponse(io.IOBase):
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\response.py", line 292, in BaseHTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\username\mambaforge\Scripts\conda-script.py", line 12, in <module>
    sys.exit(main())
  File "C:\Users\username\mambaforge\lib\site-packages\conda\cli\main.py", line 112, in main
    return conda_exception_handler(main, *args, **kwargs)
  File "C:\Users\username\mambaforge\lib\site-packages\conda\exceptions.py", line 1432, in conda_exception_handler
    return_value = exception_handler(func, *args, **kwargs)
  File "C:\Users\username\mambaforge\lib\site-packages\conda\exceptions.py", line 1135, in __call__
    return self.handle_exception(exc_val, exc_tb)
  File "C:\Users\username\mambaforge\lib\site-packages\conda\exceptions.py", line 1175, in handle_exception
    return self.handle_unexpected_exception(exc_val, exc_tb)
  File "C:\Users\username\mambaforge\lib\site-packages\conda\exceptions.py", line 1186, in handle_unexpected_exception
    self.print_unexpected_error_report(error_report)
  File "C:\Users\username\mambaforge\lib\site-packages\conda\exceptions.py", line 1248, in print_unexpected_error_report
    from .cli.main_info import get_env_vars_str, get_main_info_str
  File "C:\Users\username\mambaforge\lib\site-packages\conda\cli\main_info.py", line 15, in <module>
    from ..core.index import _supplement_index_with_system
  File "C:\Users\username\mambaforge\lib\site-packages\conda\core\index.py", line 15, in <module>
    from .package_cache_data import PackageCacheData
  File "C:\Users\username\mambaforge\lib\site-packages\conda\core\package_cache_data.py", line 22, in <module>
    from .path_actions import CacheUrlAction, ExtractPackageAction
  File "C:\Users\username\mambaforge\lib\site-packages\conda\core\path_actions.py", line 28, in <module>
    from ..gateways.connection.download import download
  File "C:\Users\username\mambaforge\lib\site-packages\conda\gateways\connection\__init__.py", line 6, in <module>
    from requests import ConnectionError, HTTPError, Session
  File "C:\Users\username\mambaforge\lib\site-packages\requests\__init__.py", line 43, in <module>
    import urllib3
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\__init__.py", line 17, in <module>
    from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\connectionpool.py", line 14, in <module>
    from ._request_methods import RequestMethods
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\_request_methods.py", line 10, in <module>
    from .response import BaseHTTPResponse
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\response.py", line 282, in <module>
    class BaseHTTPResponse(io.IOBase):
  File "C:\Users\username\mambaforge\lib\site-packages\urllib3\response.py", line 292, in BaseHTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'`

jezdez · 2023-06-08T08:25:17Z

@aym00 Could you also paste the result of running conda list --show-channel-urls please?

eeyrjmr · 2023-06-08T12:44:01Z

Its a bit bigger than just conda update. Jupyterlab doesn't launch for me now

Traceback (most recent call last):
  File "C:\STORAGE\Application\Miniconda3\Scripts\jupyter-lab-script.py", line 5, in <module>
    from jupyterlab.labapp import main
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\jupyterlab\__init__.py", line 8, in <module>
    from .handlers.announcements import (
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\jupyterlab\handlers\announcements.py", line 15, in <module>
    from jupyterlab_server.translation_utils import translator
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\jupyterlab_server\__init__.py", line 5, in <module>
    from .app import LabServerApp
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\jupyterlab_server\app.py", line 10, in <module>
    from .handlers import LabConfig, add_handlers
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\jupyterlab_server\handlers.py", line 18, in <module>
    from .listings_handler import ListingsHandler, fetch_listings
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\jupyterlab_server\listings_handler.py", line 8, in <module>
    import requests
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\requests\__init__.py", line 43, in <module>
    import urllib3
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\urllib3\__init__.py", line 17, in <module>
    from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\urllib3\connectionpool.py", line 14, in <module>
    from ._request_methods import RequestMethods
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\urllib3\_request_methods.py", line 10, in <module>
    from .response import BaseHTTPResponse
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\urllib3\response.py", line 277, in <module>
    class BaseHTTPResponse(io.IOBase):
  File "C:\STORAGE\Application\Miniconda3\lib\site-packages\urllib3\response.py", line 287, in BaseHTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'

(base) C:\STORAGE\Jupyter_sheets>

slu216 · 2023-06-11T05:15:36Z

encountered the same issue after running the following update cmd. The update itself worked but cannot use conda install afterwards.

conda update conda

Traceback error as below
File "C:\Users\slu\miniforge3\lib\site-packages\urllib3\response.py", line 282, in <module> class BaseHTTPResponse(io.IOBase): File "C:\Users\slu\miniforge3\lib\site-packages\urllib3\response.py", line 292, in BaseHTTPResponse DECODER_ERROR_CLASSES += (brotli.error,) AttributeError: module 'brotli' has no attribute 'error'

The issue seems to be that "brotlicffi" cannot be found, and code tried to import brotlipy. Workaround I took here is commenting out try-except block, setting brotli to None, re-installing brotlipy. Then the code modification can be reverted.

try:
try:
import brotlicffi as brotli # type: ignore[import]
except ImportError:
import brotli # type: ignore[import]
except ImportError:
brotli = None

digger-yu · 2023-06-12T08:42:25Z

conda version : 23.3.1 have same problem

Leanwithming · 2023-06-16T04:48:04Z

conda version : 23.3.1 have same problem

I just try doing "pip install brotli"
It works for now.

Awaiz-Malik · 2023-06-24T17:42:33Z

I got my error fixed simply by
pip install brotlipy

my conda wasn't working at all and consistently giving this error, I won't paste the full error as it is very large but it is similar to.

File "C:\Users\username\mambaforge\lib\site-packages\urllib3_init_.py", line 17, in
from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
File "C:\Users\username\mambaforge\lib\site-packages\urllib3\connectionpool.py", line 14, in
from ._request_methods import RequestMethods
File "C:\Users\username\mambaforge\lib\site-packages\urllib3_request_methods.py", line 10, in
from .response import BaseHTTPResponse
File "C:\Users\username\mambaforge\lib\site-packages\urllib3\response.py", line 282, in
class BaseHTTPResponse(io.IOBase):
File "C:\Users\username\mambaforge\lib\site-packages\urllib3\response.py", line 292, in BaseHTTPResponse
DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error

ErikYoung89 · 2023-06-30T18:16:30Z

I saw a similar issue today when trying to run streamlit in a fresh environment.

(base)C:\Users\name\company\GitRepositories\iris_app>streamlit run app.py

  Welcome to Streamlit!

  If you’d like to receive helpful onboarding emails, news, offers, promotions,
  and the occasional swag, please enter your email address below. Otherwise,
  leave this field blank.

  Email:

2023-06-30 13:02:09.138 module 'brotli' has no attribute 'error'

I ran 'conda install brotlipy -y' and received the following:

==> WARNING: A newer version of conda exists. <==
current version: 23.3.0
latest version: 23.5.0

Please update conda by running

$ conda update -n base -c defaults conda

Or to minimize the number of packages updated during conda update use

 conda install conda=23.5.0

The following NEW packages will be INSTALLED:

brotlipy pkgs/main/win-64::brotlipy-0.7.0-py39h2bbff1b_1003
cffi pkgs/main/win-64::cffi-1.15.1-py39h2bbff1b_3
pycparser pkgs/main/noarch::pycparser-2.21-pyhd3eb1b0_0

I have been using mamba primarily for my package management and had previously run 'mamba update mamba'. I was under the impression that they were functionally equivalent. After installing brotlipy via conda streamlit ran.

algaebrown · 2023-07-14T23:26:22Z

Hi, I had the same issue after run "conda update conda anaconda", It show error beblow. File "D:\Anaconda3\lib\site-packages\urllib3\response.py", line 135, in <module> class HTTPResponse(io.IOBase): File "D:\Anaconda3\lib\site-packages\urllib3\response.py", line 357, in HTTPResponse DECODER_ERROR_CLASSES += (brotli.error,) AttributeError: module "brotli" has no attribute 'error'

My solution is: open file "Anaconda3\lib\site-packages\urllib3\response.py", find the code below DECODER_ERROR_CLASSES = (IOError, zlib.error) if brotli is not None: DECODER_ERROR_CLASSES += (brotli.error,) and update it to DECODER_ERROR_CLASSES = (IOError, zlib.error) Run anaconda navigator again.

This works.

I make the modification above to site packages
conda install brotlipy to fix
undo the changes
worked

System/versions:

Linux
miniconda 3
conda 22.9.0

kalefranz added source::community catch-all for issues filed by community members tag::ssl related to an SSL issue labels Apr 30, 2020

fabosilva closed this as completed May 31, 2020

fabosilva reopened this May 31, 2020

alexCranfield mentioned this issue Jun 30, 2021

ImportError: No module named 'libtiff' zhixuhao/unet#16

Closed

sbesson mentioned this issue Dec 8, 2021

Test upgrading the conda set-up role ome/conda-omero-py#20

Merged

cgranade added a commit to microsoft/iqsharp that referenced this issue Apr 28, 2022

Workaround for conda/conda#9903.

c978947

github-actions bot added the stale [bot] marked as stale due to inactivity label Jul 18, 2022

github-actions bot added the stale::closed [bot] closed after being marked as stale label Aug 17, 2022

github-actions bot closed this as completed Aug 17, 2022

joergbrech added a commit to DLR-SC/tigl that referenced this issue Feb 17, 2023

install brotli, see conda/conda#9903

844af75

jmoralez mentioned this issue May 31, 2023

[ci] use an MRAN snapshot for R 3.6 Linux jobs (fixes #5898) microsoft/LightGBM#5903

Merged

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github-actions bot added stale::recovered [bot] recovered after being marked as stale and removed stale::closed [bot] closed after being marked as stale stale [bot] marked as stale due to inactivity labels Jun 8, 2023

jaimergp mentioned this issue Jun 22, 2023

Miniconda - Channel conda-forge not working - Traceback message conda-forge/conda-forge.github.io#1966

Closed

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Alexander-Barth mentioned this issue Jun 23, 2023

Friendly error message for users with special characters in user names on Windows JuliaPy/Conda.jl#200

Merged

nhz2 mentioned this issue Jun 30, 2023

codespell: config, workflow and some typos fixed JuliaIO/Zarr.jl#120

Merged

beeankha added the tag::update related to an upgrade issue label Aug 29, 2023

After update conda does not work showing the error "module 'brotli' has no attribute" #9903

After update conda does not work showing the error "module 'brotli' has no attribute" #9903

Comments

fabosilva commented Apr 30, 2020 • edited by jezdez

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aym00 commented Jun 7, 2023 • edited by jezdez

jezdez commented Jun 8, 2023

eeyrjmr commented Jun 8, 2023

slu216 commented Jun 11, 2023 • edited

digger-yu commented Jun 12, 2023

Leanwithming commented Jun 16, 2023

Awaiz-Malik commented Jun 24, 2023

ErikYoung89 commented Jun 30, 2023

algaebrown commented Jul 14, 2023 • edited

fabosilva commented Apr 30, 2020 •

edited by jezdez

heraclitusq commented Jun 21, 2020 •

edited

aym00 commented Jun 7, 2023 •

edited by jezdez

slu216 commented Jun 11, 2023 •

edited

algaebrown commented Jul 14, 2023 •

edited