fix: check if reserve is configured

[acha-bill]

Checklist

• [x] I have read the coding guide.
• [ ] My change requires a documentation update, and I have done it.
• [ ] I have added tests to cover my changes.
• [ ] I have filled out the description and linked the related issues.

Description

Check if reserve is configured before attempting to put chunk

Related Issue (Optional)

#4829