quote non-existing files

[phfontes]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [X ] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

Access the platform, ask a question

Any log messages given by the failure

Expected/desired behavior

OS and Version?

Windows 7, 8 or 10. Linux (which distribution). macOS (Yosemite? El Capitan? Sierra?) Windows 10

azd version?

run azd version and copy paste here. 1.0.1

Versions

Mention any other details that might be useful

I noticed that when asking a question, in the "citations" field it is showing a file that is not saved in the container. Note: It used to exist, but now it doesn't show anymore. happens eventually

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