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https://issues.apache.org/jira/browse/AIRFLOW-4900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16879487#comment-16879487
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ASF subversion and git services commented on AIRFLOW-4900:
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Commit 2b366934cdc20e8fb60b4b1e7b6c840a6708b258 in airflow's branch
refs/heads/ms-travis-ci-tests from Luqman Abdul Mushawwir
[ https://gitbox.apache.org/repos/asf?p=airflow.git;h=2b36693 ]
[AIRFLOW-4900] Resolve incompatible version of Werkzeug (#5535)
* [AIRFLOW-4900] Resolve incompatible version of Werkzeug
Pin Werkzeug version to >= 0.15 as flask requirement needs it.
* Update setup.py
> Incompatible version of Werkzeug after Flask upgrade
> ----------------------------------------------------
>
> Key: AIRFLOW-4900
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4900
> Project: Apache Airflow
> Issue Type: Bug
> Components: webserver
> Affects Versions: 1.10.3
> Reporter: Luqman Abdul Mushawwir
> Priority: Major
> Fix For: 2.0.0
>
>
> On July 5th morning UTC+7, Flask have released version 1.1.0, which will be
> used in airflow because we have requirements for flask as follows:
> 'flask>=1.0, <2.0'
> However, flask pinned their Werkzeug to "Werkzeug>=0.15" which is
> incompatible with airflow's Werkzeug ('werkzeug>=0.14.1, <0.15.0'), resulting
> to error when doing "from airflow import model":
> _ERROR: Failure: ImportError (No module named 'werkzeug.wrappers.json';
> 'werkzeug.wrappers' is not a package)_
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