[BUG] 'No module named os' in promptflow core package

[SageWorks4925]

My azure app service deployments are failing due the missing 'import os' statement from 'src/promptflow-core/promptflow/core/_serving/v1/blueprint/static_web_blueprint.py' file.

If you see, line 27 uses os package to get environment Variable value. But there is no 'import os' statement.

Somehow this is in latest promptflow core package. I would appreciate it if you could resolve this issue asap. It would be great to know if there is a workaround or maybe bypass this.

[vsantele]

HI,
A PR was made two weeks ago to fix this issue. (#4043)

[github-actions]

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