# App crashing in Preview mode (Dev) but works fine in Production

**URL:** <https://replit.discourse.group/t/app-crashing-in-preview-mode-dev-but-works-fine-in-production/9515>\
**Category:** Workspace\
**Tags:** using-replit\
**Created:** [February 26, 2026, 11:50am UTC](https://replit.discourse.group/t/app-crashing-in-preview-mode-dev-but-works-fine-in-production/9515 "2026-02-26T11:50:20Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![marcinmaciejcie](https://avatars.discourse-cdn.com/v4/letter/m/db5fbb/32.png) [@marcinmaciejcie](https://replit.discourse.group/u/marcinmaciejcie)\
**Post date:** [February 26, 2026, 11:58am UTC](https://replit.discourse.group/t/app-crashing-in-preview-mode-dev-but-works-fine-in-production/9515/3 "2026-02-26T11:58:22Z")

</div>

The same issue here [Each of my apps is crashing 30 seconds after opening - #12](https://replit.discourse.group/t/each-of-my-apps-is-crashing-30-seconds-after-opening/9504/12)

---

_[View the full topic](https://replit.discourse.group/t/app-crashing-in-preview-mode-dev-but-works-fine-in-production/9515)._