Airflow: Webserver doesnt start with WTForms==2.3.0

[dreamca4er]

Apache Airflow version: 1.10.7

Kubernetes version (if you are using kubernetes) (use kubectl version):

Environment: local

• Cloud provider or hardware configuration: 3Ghz Intel Core i5, 16GB
• OS (e.g. from /etc/os-release): Debian 9
• Kernel (e.g. uname -a): Linux debian 4.9.0-12-amd64 #1 SMP Debian 4.9.210-1 (2020-01-20) x86_64 GNU/Linux
• Install tools:
• Others:

What happened:

Traceback (most recent call last):
File "/usr/local/bin/airflow", line 26, in
from airflow.bin.cli import CLIFactory
File "/usr/local/lib/python3.6/site-packages/airflow/bin/cli.py", line 71, in
from airflow.www_rbac.app import cached_app as cached_app_rbac
File "/usr/local/lib/python3.6/site-packages/airflow/www_rbac/app.py", line 26, in
from flask_appbuilder import AppBuilder, SQLA
File "/usr/local/lib/python3.6/site-packages/flask_appbuilder/__init__.py", line 6, in
from .base import AppBuilder # noqa: F401
File "/usr/local/lib/python3.6/site-packages/flask_appbuilder/base.py", line 8, in
from .api.manager import OpenApiManager
File "/usr/local/lib/python3.6/site-packages/flask_appbuilder/api/manager.py", line 7, in
from flask_appbuilder.baseviews import BaseView
File "/usr/local/lib/python3.6/site-packages/flask_appbuilder/baseviews.py", line 21, in
from .forms import GeneralModelConverter
File "/usr/local/lib/python3.6/site-packages/flask_appbuilder/forms.py", line 17, in
from .fieldwidgets import (
File "/usr/local/lib/python3.6/site-packages/flask_appbuilder/fieldwidgets.py", line 3, in
from wtforms.widgets import html_params, HTMLString
ImportError: cannot import name 'HTMLString'

It seems that after the release of WTForms==2.3.0 webserver doesnt start
Changing it back to WTForms==2.2.1 solves the issue

How to reproduce it:
Use WTForms==2.3.0

[boring-cyborg[bot]]

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[robzor92]

Seeing the same issue. They release WTForms 2.3.0 today so that probably broke airflow for everyone.

[dreamca4er]

My pip freeze ouput (working configuration)

aiohttp==3.5.4
alembic==1.4.2
amqp==2.5.2
apache-airflow==1.10.7
apispec==1.3.3
argcomplete==1.11.1
astroid==2.3.3
async-timeout==3.0.1
asyncio==3.4.3
attrs==19.3.0
Babel==2.8.0
bcrypt==3.1.7
billiard==3.6.3.0
boto3==1.12.43
botocore==1.15.43
cached-property==1.5.1
cachetools==4.1.0
cattrs==0.9.2
celery==4.4.2
certifi==2020.4.5.1
cffi==1.14.0
chardet==3.0.4
click==7.1.1
clickhouse-cityhash==1.0.2.3
clickhouse-driver==0.1.3
colorama==0.4.3
colorlog==4.0.2
configparser==3.5.3
croniter==0.3.31
cryptography==2.9.1
ddt==1.3.1
defusedxml==0.6.0
dill==0.3.1.1
docutils==0.15.2
Flask==1.1.2
Flask-Admin==1.5.4
Flask-AppBuilder==2.3.2
Flask-Babel==1.0.0
Flask-Caching==1.3.3
Flask-JWT-Extended==3.24.1
Flask-Login==0.4.1
Flask-OpenID==1.2.5
Flask-SQLAlchemy==2.4.1
flask-swagger==0.2.13
Flask-WTF==0.14.3
flower==0.9.4
funcsigs==1.0.2
future==0.16.0
google-api-core==1.17.0
google-auth==1.14.1
google-cloud-bigquery==1.17.0
google-cloud-core==1.3.0
google-resumable-media==0.5.0
googleapis-common-protos==1.51.0
graphviz==0.14
graypy==1.1.2
greenstalk==0.5.2
gunicorn==19.10.0
hmsclient==0.1.1
humanize==0.5.1
idna==2.8
idna-ssl==1.1.0
importlib-metadata==1.6.0
iso8601==0.1.12
isort==4.3.21
itsdangerous==1.1.0
JayDeBeApi==1.1.1
Jinja2==2.10.3
jmespath==0.9.5
JPype1==0.7.3
json-merge-patch==0.2
jsonschema==3.2.0
kombu==4.6.8
kubernetes==11.0.0
lazy-object-proxy==1.4.3
lockfile==0.12.2
lz4==3.0.1
Mako==1.1.2
Markdown==2.6.11
MarkupSafe==1.1.1
marshmallow==2.21.0
marshmallow-enum==1.5.1
marshmallow-sqlalchemy==0.22.3
mccabe==0.6.1
multidict==4.7.5
mysqlclient==1.3.14
ndg-httpsclient==0.5.1
numpy==1.18.3
oauthlib==3.1.0
pandas==0.25.3
paramiko==2.7.1
pendulum==1.4.4
prison==0.1.3
protobuf==3.11.3
psutil==5.7.0
psycopg2-binary==2.8.4
pyasn1==0.4.8
pyasn1-modules==0.2.8
pycparser==2.20
Pygments==2.6.1
PyHive==0.6.2
PyJWT==1.7.1
pylint==2.4.2
PyNaCl==1.3.0
pyOpenSSL==19.1.0
pyrsistent==0.16.0
pysftp==0.2.9
python-daemon==2.1.2
python-dateutil==2.8.1
python-editor==1.0.4
python3-openid==3.1.0
pytz==2019.3
pytzdata==2019.3
PyYAML==5.3.1
ratelimit==2.2.1
redis==3.4.1
requests==2.21.0
requests-oauthlib==1.3.0
rsa==4.0
s3transfer==0.3.3
sasl==0.2.1
setproctitle==1.1.10
six==1.14.0
SQLAlchemy==1.3.15
SQLAlchemy-JSONField==0.9.0
SQLAlchemy-Utils==0.33.9
sshtunnel==0.1.5
tabulate==0.8.7
tenacity==4.12.0
termcolor==1.1.0
text-unidecode==1.2
thrift==0.13.0
thrift-sasl==0.3.0
tornado==5.1.1
typed-ast==1.4.1
typing==3.7.4.1
typing-extensions==3.7.4.2
tzlocal==1.5.1
unicodecsv==0.14.1
urllib3==1.24.3
vine==1.3.0
websocket-client==0.57.0
Werkzeug==0.16.1
wrapt==1.11.2
WTForms==2.2.1
yarl==1.4.2
zipp==3.1.0
zope.deprecation==4.4.0

[robzor92]

I see they already updated setup.py in airflow to use 2.2.1 https://github.com/apache/airflow/blob/1d5d6613a14ae3120093979cb31ae8b0de90c2d4/setup.py#L601, but not released it yet.

[potiuk]

Closing as duplicate #8512. You can also install airflow using pinned requirements that are already released in 1.10.10. See also #8513 with detail description of repeatable installation process.