Apache Airflow : airflow initdb throws ModuleNotFoundError: No module named 'werkzeug.wrappers.json'; 'werkzeug.wrappers' is not a package error

airflow
Mohan picture Mohan · Jul 8, 2019 · Viewed 9.9k times · Source

On Ubuntu 18.04 with python 3.6.8, trying to install airflow. When I ran airflow initdb command, below error is thrown

Traceback (most recent call last):
  File "/home/uEnAFpip/.virtualenvs/airflow/bin/airflow", line 21, in <module>
    from airflow import configuration
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/airflow/__init__.py", line 40, in <module>
    from flask_admin import BaseView
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask_admin/__init__.py", line 6, in <module>
    from .base import expose, expose_plugview, Admin, BaseView, AdminIndexView  # noqa: F401
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask_admin/base.py", line 6, in <module>
    from flask import Blueprint, current_app, render_template, abort, g, url_for
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask/__init__.py", line 20, in <module>
    from .app import Flask
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask/app.py", line 69, in <module>
    from .wrappers import Request
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask/wrappers.py", line 14, in <module>
    from werkzeug.wrappers.json import JSONMixin as _JSONMixin
ModuleNotFoundError: No module named 'werkzeug.wrappers.json'; 'werkzeug.wrappers' is not a package

tried pip3 install --upgrade Flask

Answer

Hongjia picture Hongjia · Jul 16, 2019

“pip3 install werkzeug==0.15.4” solved my problem. Seems that flask referenced the wrong version of werkzeug.

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