mbaroody opened a new issue #8517:
URL: https://github.com/apache/airflow/issues/8517
Getting the following ImportError this morning:
```
*** waiting 10s...
*** executing initdb
[2020-04-22 14:47:47,388] {{settings.py:253}} INFO -
settings.configure_orm(): Using pool settings. pool_size=5, max_overflow=10,
pool_recycle=1800, pid=26
Traceback (most recent call last):
File "/usr/local/bin/airflow", line 26, in <module>
from airflow.bin.cli import CLIFactory
File "/usr/local/lib/python3.7/site-packages/airflow/bin/cli.py", line 71,
in <module>
from airflow.www_rbac.app import cached_app as cached_app_rbac
File "/usr/local/lib/python3.7/site-packages/airflow/www_rbac/app.py",
line 27, in <module>
from flask_appbuilder import AppBuilder, SQLA
File
"/usr/local/lib/python3.7/site-packages/flask_appbuilder/__init__.py", line 6,
in <module>
from .base import AppBuilder # noqa: F401
File "/usr/local/lib/python3.7/site-packages/flask_appbuilder/base.py",
line 8, in <module>
from .api.manager import OpenApiManager
File
"/usr/local/lib/python3.7/site-packages/flask_appbuilder/api/manager.py", line
7, in <module>
from flask_appbuilder.baseviews import BaseView
File
"/usr/local/lib/python3.7/site-packages/flask_appbuilder/baseviews.py", line
21, in <module>
from .forms import GeneralModelConverter
File "/usr/local/lib/python3.7/site-packages/flask_appbuilder/forms.py",
line 17, in <module>
from .fieldwidgets import (
File
"/usr/local/lib/python3.7/site-packages/flask_appbuilder/fieldwidgets.py", line
3, in <module>
from wtforms.widgets import html_params, HTMLString
ImportError: cannot import name 'HTMLString' from 'wtforms.widgets'
(/usr/local/lib/python3.7/site-packages/wtforms/widgets/__init__.py)
```
due to breaking change here in v2.3.0:
https://github.com/wtforms/wtforms/compare/2.2.1...2.3.0#diff-6393540c887450b9738cb2eecc5bcad8
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