ImportError: cannot import 'soft_unicode' from 'markupsafe' 2.1.0

[gvarnell]

Since release 2.1.0, all builds are failing.

cannot import name 'soft_unicode' from 'markupsafe'

pip install markupsafe

[davidism]

Duplicate of #282

You are using an unsupported version of the project, please update to the latest version if possible. Additionally, please read https://hynek.me/articles/semver-will-not-save-you/, then use a tool like pip-tools to pin your dependencies and control when you get updates. Be sure to run your tests with deprecation warnings treated as errors so that you get notified of these types of changes early.