### Author:  [@codmakr](https://meta.discourse.org/u/codmakr)
#### Post date: [September 29, 2016, 10:52am UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/1 "2016-09-29T10:52:43Z")
I get this error can someone please help me?
```plaintext
Stopping old container
+ /usr/bin/docker stop -t 10 app
app
(): found character that cannot start any token while scanning for the next token at line 18 column 3 -e LANG=en_US.UTF-8
YAML syntax error. Please check your containers/*.yml config files.
```
Try [http://www.yamllint.com/](http://www.yamllint.com/) to search an error but there are no errors in there.
---
### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [September 29, 2016, 11:15am UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/2 "2016-09-29T11:15:11Z")
Can you post your yml file (without passwords, if course)?
---
### Author:  [@codmakr](https://meta.discourse.org/u/codmakr)
#### Post date: [September 29, 2016, 11:18am UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/3 "2016-09-29T11:18:58Z")
Sure
```plaintext
## this is the all-in-one, standalone Discourse Docker container template
##
## After making changes to this file, you MUST rebuild
## /var/discourse/launcher rebuild app
##
## BE *VERY* CAREFUL WHEN EDITING!
## YAML FILES ARE SUPER SUPER SENSITIVE TO MISTAKES IN WHITESPACE OR ALIGNMENT!
## visit http://www.yamllint.com/ to validate this file as needed
templates:
- "templates/postgres.template.yml"
- "templates/redis.template.yml"
- "templates/web.template.yml"
- "templates/web.ratelimited.template.yml"
## Uncomment these two lines if you wish to add Lets Encrypt (https)
#- "templates/web.ssl.template.yml"
#- "templates/web.letsencrypt.ssl.template.yml"
## which TCP/IP ports should this container expose?
## If you want Discourse to share a port with another webserver like Apache or nginx,
## see https://meta.discourse.org/t/17247 for details
expose:
- "80:80" # http
- "443:443" # https
params:
db_default_text_search_config: "pg_catalog.english"
## Set db_shared_buffers to a max of 25% of the total memory.
## will be set automatically by bootstrap based on detected RAM, or you can override
db_shared_buffers: "128MB"
## can improve sorting performance, but adds memory usage per-connection
#db_work_mem: "40MB"
## Which Git revision should this container use? (default: tests-passed)
#version: tests-passed
env:
LANG: en_US.UTF-8
# DISCOURSE_DEFAULT_LOCALE: en
## How many concurrent web requests are supported? Depends on memory and CPU cores.
## will be set automatically by bootstrap based on detected CPUs, or you can override
UNICORN_WORKERS: 2
## TODO: The domain name this Discourse instance will respond to
DISCOURSE_HOSTNAME: 'anewforum'
## Uncomment if you want the container to be started with the same
## hostname (-h option) as specified above (default "$hostname-$config")
#DOCKER_USE_HOSTNAME: true
## TODO: List of comma delimited emails that will be made admin and developer
## on initial signup example 'user1@example.com,user2@example.com'
DISCOURSE_DEVELOPER_EMAILS: ' ***@****'
## TODO: The SMTP mail server used to validate new accounts and send notifications
DISCOURSE_SMTP_ADDRESS: # required
DISCOURSE_SMTP_PORT: # (optional, default 587)
DISCOURSE_SMTP_USER_NAME: # required
DISCOURSE_SMTP_PASSWORD: # required, WARNING the char '#' in pw can cause problems!
DISCOURSE_SMTP_ENABLE_START_TLS: true # (optional, default true)
## If you added the Lets Encrypt template, uncomment below to get a free SSL certificate
#LETSENCRYPT_ACCOUNT_EMAIL: me@example.com
## The CDN address for this Discourse instance (configured to pull)
## see https://meta.discourse.org/t/14857 for details
#DISCOURSE_CDN_URL: //discourse-cdn.example.com
## The Docker container is stateless; all data is stored in /shared
volumes:
- volume:
host: /var/discourse/shared/standalone
guest: /shared
- volume:
host: /var/discourse/shared/standalone/log/var-log
guest: /var/log
## Plugins go here
## see https://meta.discourse.org/t/19157 for details
hooks:
after_code:
- exec:
cd: $home/plugins
cmd:
- git clone https://github.com/discourse/docker_manager.git
## Any custom commands to run after building
run:
- exec: echo "Beginning of custom commands"
## If you want to set the 'From' email address for your first registration, uncomment and change:
## After getting the first signup email, re-comment the line. It only needs to run once.
#- exec: rails r "SiteSetting.notification_email='info@unconfigured.discourse.org'"
- exec: echo "End of custom commands"
```
---
### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [September 29, 2016, 11:26am UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/4 "2016-09-29T11:26:53Z")
Hey, @tgxworld, I’d this related to the problem that you mentioned in another thread that I can’t find right now on my phone?
---
### Author:  [@troyshu](https://meta.discourse.org/u/troyshu)
#### Post date: [September 29, 2016, 11:43am UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/5 "2016-09-29T11:43:54Z")
I’ve seen this error before. Try looking for “tabs” in your app.yml, and replace them with “spaces” (yml doesn’t like tabs).
---
### Author:  [@codmakr](https://meta.discourse.org/u/codmakr)
#### Post date: [September 29, 2016, 11:53am UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/6 "2016-09-29T11:53:54Z")
Thanks for your reply, there are no tabs in my app.yml, checked it already.
Maybe someone can give me the default app.yml and i will change it
---
### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [September 29, 2016, 12:11pm UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/7 "2016-09-29T12:11:41Z")
It’s in the templates directory. Standalone.yml.
---
### Author:  [@codmakr](https://meta.discourse.org/u/codmakr)
#### Post date: [September 29, 2016, 12:20pm UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/8 "2016-09-29T12:20:09Z")
Thanks found it
/var/discourse/samples
---
### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [September 29, 2016, 12:21pm UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/9 "2016-09-29T12:21:43Z")
Yeah. That’s it! I remembered wrong, and don’t have discourse on my phone. 🙂
---
### Author:  [@codmakr](https://meta.discourse.org/u/codmakr)
#### Post date: [September 29, 2016, 12:39pm UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/10 "2016-09-29T12:39:40Z")
I dont know what happend with the old app.yml with the new one it worked now.
Thanks for your help.
---
### Author:  [@codinghorror](https://meta.discourse.org/u/codinghorror)
#### Post date: [September 29, 2016, 5:14pm UTC](https://meta.discourse.org/t/rebuild-app-doesnt-work/50851/11 "2016-09-29T17:14:57Z")