# Discourse failing to connect to port 3000

**URL:** https://meta.discourse.org/t/discourse-failing-to-connect-to-port-3000/164389
**Category:** Support
**Created:** [September 17, 2020, 9:07pm UTC](https://meta.discourse.org/t/discourse-failing-to-connect-to-port-3000/164389 "2020-09-17T21:07:21Z")
**Posts on this page:** 1
**Showing post:** 8

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### Author: ![pfaffman](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/pfaffman/32/120154_2.png) [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [September 17, 2020, 10:32pm UTC](https://meta.discourse.org/t/discourse-failing-to-connect-to-port-3000/164389/8 "2020-09-17T22:32:56Z")

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You need to rebuild your data container and then rebuild web\_only. There are some hints in [PostgreSQL 12 update](https://meta.discourse.org/t/postgresql-12-update/151236).

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