# Rebuilding the application makes forum unresponsive
**URL:** https://meta.discourse.org/t/rebuilding-the-application-makes-forum-unresponsive/308700
**Category:** Self-hosting
**Created:** [May 20, 2024, 1:58pm UTC](https://meta.discourse.org/t/rebuilding-the-application-makes-forum-unresponsive/308700 "2024-05-20T13:58:18Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Marek\_Wojtaszek](https://meta.discourse.org/u/Marek_Wojtaszek)
#### Post date: [May 20, 2024, 1:58pm UTC](https://meta.discourse.org/t/rebuilding-the-application-makes-forum-unresponsive/308700/1 "2024-05-20T13:58:18Z")
I wanted to change my SMTP server password, so I followed the instruction here to update the variables:
> [@Set Environmental Variables](https://meta.discourse.org/t/set-environmental-variables/270832):
>
> notebook_with_decorative_cover This is a #how-to guide for setting up environmental variables in a self-hosted Discourse installation. person_raising_hand Required user level: Administrator Environmental variables play a crucial role in configuring your Discourse instance. They can store sensitive data like API keys and database passwords, making your installation more secure and flexible. In Discourse, environmental variables are set in the app.yml file within your Docker container setup…
After updating the app.yml file I ran the following commands:
> [@Set Environmental Variables](https://meta.discourse.org/t/set-environmental-variables/270832/1):
>
> ```plaintext
> ./launcher destroy app
> ./launcher start app
>
> ```
As soon as I run it-- my forum stops responding to https requests ☹
Same happens when I rebuild the app, but it just takes much longer.
Please advise how I can troubleshoot that. I is pretty urgent as not no emails are being sent out ☹
Thank you so much in advance for your advice!
---
### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [May 20, 2024, 2:00pm UTC](https://meta.discourse.org/t/rebuilding-the-application-makes-forum-unresponsive/308700/2 "2024-05-20T14:00:32Z")
Stops responding how? Do you get an error? It can take a while for the server to start up, so maybe you’re just not waiting long enough? Can you share your URL?