# White screen after deleting custom emoji

**URL:** <https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608>\
**Category:** Support\
**Created:** [2017年四月25日 23:14 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608 "2017-04-25T23:14:45Z")\
**Posts on this page:** 11\
**Page:** 1

<div class="post-metadata">

**Author:** ![Kel](https://avatars.discourse-cdn.com/v4/letter/k/a698b9/32.png) [@Kel](https://meta.discourse.org/u/Kel)\
**Post date:** [2017年四月25日 23:14 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/1 "2017-04-25T23:14:45Z")

</div>

Hi everyone,

I have a problem with a Discourse install where the screen is completely blank after I deleted a custom emoji from the admin panel.

I have tried running ./launcher rebuild app and it didn’t work, I’m still getting the white screen ☹

In the nginx log I got a whole series of errors like these as the last entries before fail:

```plaintext
[error] 212#212: *9 connect() failed (111: Connection refused) while connecting to upstream, client: 555.555.555.55, server: _, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:3000/", host: xxx

```

Does anyone know what’s going on please?

Any help would be very much appreciated!

Thanks!!

p.s. I am running Discourse Docker on a Digital Ocean Droplet

---

<div class="post-metadata">

**Author:** ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror)\
**Post date:** [2017年四月25日 23:28 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/2 "2017-04-25T23:28:52Z")

</div>

Disk full? Out of memory? Swap file set up? Docker installed properly? I think you have some other problem. Check disk, memory, and docker info.

---

<div class="post-metadata">

**Author:** ![Kel](https://avatars.discourse-cdn.com/v4/letter/k/a698b9/32.png) [@Kel](https://meta.discourse.org/u/Kel)\
**Post date:** [2017年四月25日 23:54 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/3 "2017-04-25T23:54:03Z")

</div>

Thanks, I’ve checked and all seems ok, talking to Digital Ocean to see if they can spot anything wrong.

I will report back 🙂

---

<div class="post-metadata">

**Author:** ![Kel](https://avatars.discourse-cdn.com/v4/letter/k/a698b9/32.png) [@Kel](https://meta.discourse.org/u/Kel)\
**Post date:** [2017年四月26日 00:56 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/4 "2017-04-26T00:56:34Z")

</div>

Update:

Docker seems fine:

```plaintext
# docker info
Containers: 1
 Running: 1
 Paused: 0
 Stopped: 0
Images: 4
Server Version: 17.03.0-ce
Storage Driver: aufs
 Root Dir: /var/lib/docker/aufs
 Backing Filesystem: extfs
 Dirs: 7
 Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins: 
 Volume: local
 Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 977c511eda0925a723debdc94d09459af49d082a
runc version: a01dafd48bc1c7cc12bdb01206f9fea7dd6feb70
init version: 949e6fa
Security Options:
 apparmor
 seccomp
  Profile: default
Kernel Version: 4.4.0-75-generic
Operating System: Ubuntu 16.04.2 LTS
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.953 GiB
Name: ubuntu-o
ID: Q34X:7PTI:SI67:4XJX:4YGR:EJGC:MR74:N3DT:SWBY:6WKX:YMJK:SHDO
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

```

Docker stats:

```plaintext
CONTAINER CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS
e97b6427d2cf 5.98% 1.017 GiB / 1.953 GiB 52.07% 161 kB / 216 kB 144 MB / 15.6 MB 65

```

Memory usage:

```plaintext
# df -h
Filesystem Size Used Avail Use% Mounted on
udev 981M 0 981M 0% /dev
tmpfs 201M 3.2M 197M 2% /run
/dev/vda1 30G 9.9G 20G 34% /
tmpfs 1001M 596K 1000M 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 1001M 0 1001M 0% /sys/fs/cgroup
none 30G 9.9G 20G 34% /var/lib/docker/aufs/mnt/99c0f2807a ... 2
shm 64M 4.0K 64M 1% /var/lib/docker/containers/e ... a/shm
tmpfs 201M 0 201M 0% /run/user/0

```

I’m really tired and can’t see anything wrong and I’m not sure how to test that the swap file is set up, it should be though! As I say, everything was working fine and nothing was changed except deleting the emoji.

From my local machine:

```plaintext
$ curl -i <myip>
HTTP/1.1 301 Moved Permanently
Server: nginx/1.11.6
Date: Wed, 26 Apr 2017 00:03:36 GMT
Content-Type: text/html
Content-Length: 185
Location: https://<myserver>
Connection: keep-alive

<html>
<head><title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>nginx/1.11.6</center>
</body>
</html>

```

Does this help any?

Thanks again!! 🙂

---

<div class="post-metadata">

**Author:** ![Kel](https://avatars.discourse-cdn.com/v4/letter/k/a698b9/32.png) [@Kel](https://meta.discourse.org/u/Kel)\
**Post date:** [2017年四月26日 09:50 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/5 "2017-04-26T09:50:53Z")

</div>

OK, a bit more awake this morning, here’s the log where the 500 errors started and as I said, it was literally after I deleted a custom emoji, of course there still could be some other problem somewhere that is causing this, but now I am pretty convinced this was the trigger event:

```plaintext
Started GET "/admin/customize/emojis.json?_=1493157113083" for 213.205.253.56 at 2017-04-25 21:52:21 +0000
Processing by Admin::EmojisController#index as JSON
  Parameters: {"_"=>"1493157113083"}
Completed 200 OK in 2ms (Views: 0.1ms | ActiveRecord: 0.0ms)
Started DELETE "/admin/customize/emojis/ord_88" for 213.205.253.56 at 2017-04-25 21:52:25 +0000
Processing by Admin::EmojisController#destroy as */*
  Parameters: {"id"=>"ord_88"}
Completed 200 OK in 80ms (Views: 4.7ms | ActiveRecord: 13.5ms)
Started GET "/latest.json?order=default&_=1493157113084" for 213.205.253.56 at 2017-04-25 21:52:28 +0000
Processing by ListController#latest as JSON
  Parameters: {"order"=>"default", "_"=>"1493157113084"}
Completed 200 OK in 341ms (Views: 0.6ms | ActiveRecord: 45.9ms)
Started GET "/" for 213.205.253.56 at 2017-04-25 21:52:30 +0000
Processing by ListController#latest as HTML
Completed 500 Internal Server Error in 55ms (ActiveRecord: 15.1ms)
NoMethodError (undefined method `url' for nil:NilClass)
/var/www/discourse/app/models/emoji.rb:98:in `block (2 levels) in load_custom'
Started GET "/" for <myip> at 2017-04-25 21:52:34 +0000
Processing by ListController#latest as HTML
Completed 500 Internal Server Error in 85ms (ActiveRecord: 14.8ms)
NoMethodError (undefined method `url' for nil:NilClass)
/var/www/discourse/app/models/emoji.rb:98:in `block (2 levels) in load_custom'

```

From this moment onwards there have been problems and the site is unusable ☹

Does anyone know what has happened here and how to fix it please?

Thank you!!

---

<div class="post-metadata">

**Author:** ![Kel](https://avatars.discourse-cdn.com/v4/letter/k/a698b9/32.png) [@Kel](https://meta.discourse.org/u/Kel)\
**Post date:** [2017年四月26日 10:17 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/6 "2017-04-26T10:17:43Z")

</div>

OK problem fixed following the advice given here:

> [@Adding a custom emoji broke the site](https://meta.discourse.org/t/adding-a-custom-emoji-broke-the-site/59687/2):
>
> Possibly related to (no idea how to fix it, however - sorry!) [https://github.com/discourse/discourse/commit/566f367fc347617f3feb908257c6ed925d0e2577](https://github.com/discourse/discourse/commit/566f367fc347617f3feb908257c6ed925d0e2577)

In short there was a broken emoji, deleting the custom emoji and clearing the emoji cache solved the problem.

Thanks everyone, we’re back up and running again, hope this helps others 🙂

---

<div class="post-metadata">

**Author:** ![tgxworld](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/tgxworld/32/106117_2.png) [@tgxworld](https://meta.discourse.org/u/tgxworld)\
**Post date:** [2017年四月26日 12:28 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/8 "2017-04-26T12:28:59Z")

</div>

I’ve have a look through the code path again to see if I missed something. You shouldn’t have to go through all the trouble just to remove a custom emoji.

---

<div class="post-metadata">

**Author:** ![Kel](https://avatars.discourse-cdn.com/v4/letter/k/a698b9/32.png) [@Kel](https://meta.discourse.org/u/Kel)\
**Post date:** [2017年四月26日 12:36 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/9 "2017-04-26T12:36:30Z")

</div>

Thanks for this - please let me know if you need any further information or have any questions and I will try and help 🙂

---

<div class="post-metadata">

**Author:** ![tgxworld](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/tgxworld/32/106117_2.png) [@tgxworld](https://meta.discourse.org/u/tgxworld)\
**Post date:** [2017年五月5日 06:55 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/10 "2017-05-05T06:55:08Z")

</div>

I can’t really tell what the root cause is here but I’ve added preventive measures to not blow up the whole site just because one custom emoji is broken.

[https://github.com/discourse/discourse/commit/e61959e6a8c8c7095ac69ec4a96486a7dcb8b511](https://github.com/discourse/discourse/commit/e61959e6a8c8c7095ac69ec4a96486a7dcb8b511)

---

<div class="post-metadata">

**Author:** ![Kel](https://avatars.discourse-cdn.com/v4/letter/k/a698b9/32.png) [@Kel](https://meta.discourse.org/u/Kel)\
**Post date:** [2017年五月5日 11:12 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/11 "2017-05-05T11:12:59Z")

</div>

That’s good enough for me - thank you for your efforts!!

All the best  
Kel

---

<div class="post-metadata">

**Author:** ![tgxworld](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/tgxworld/32/106117_2.png) [@tgxworld](https://meta.discourse.org/u/tgxworld)\
**Post date:** [2017年五月8日 10:13 UTC](https://meta.discourse.org/t/white-screen-after-deleting-custom-emoji/61608/12 "2017-05-08T10:13:54Z")

</div>

This topic was automatically closed after 3 days. New replies are no longer allowed.