# Upgrade with discourse-tagging plugin failed, website down
**URL:** https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746
**Category:** Support
**Created:** [August 4, 2015, 2:56pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746 "2015-08-04T14:56:04Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@uwe\_keim](https://meta.discourse.org/u/uwe_keim)
#### Post date: [August 4, 2015, 2:56pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/1 "2015-08-04T14:56:04Z")
Tried to do an upgrade through the web UI, it failed.
I then did the usual
```
cd /var/discourse
git pull
./launcher rebuild app
```
but it also failed ([discourse-upgrade-failed.txt](https://global.discourse-cdn.com/meta/original/3X/8/2/827f4120ccc7e9eb3b47def16b41719546fe4515.txt)):
> \*\* FAILED TO BOOTSTRAP \*\* please scroll up and look for earlier error messages, there may be more than one
I’ve found this error, scrolling up.
> NoMethodError: undefined method `attributes’ for TopicListItemSerializer:Class
Now [my website](http://entwicklergate.de) is down and I’m really clueless.
**My question:**
How to approach this and bring my website back online again?
---
### Author:  [@jspautsch](https://meta.discourse.org/u/jspautsch)
#### Post date: [August 4, 2015, 2:57pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/2 "2015-08-04T14:57:12Z")
I’m curious, do you have the discourse-tagging plugin installed? Can you scroll up in the output and see if you spot any other errors?
Like this one:
> [@jspautsch](#):
>
> NoMethodError: undefined method ‘attributes’ for TopicListItemSerializer:Class
---
### Author:  [@uwe\_keim](https://meta.discourse.org/u/uwe_keim)
#### Post date: [August 4, 2015, 2:57pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/3 "2015-08-04T14:57:59Z")
Yes, the `discourse-tagging` plugin _is_ installed.
I’ve attached the whole output and found:
> NoMethodError: undefined method `attributes’ for TopicListItemSerializer:Class
---
### Author:  [@jspautsch](https://meta.discourse.org/u/jspautsch)
#### Post date: [August 4, 2015, 2:59pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/4 "2015-08-04T14:59:52Z")
Yeah you’re getting the same error I am. The latest changes to the tagging plugin seem to have broken my instance. I have temporarily disabled the tagging plugin and was able to build successfully.
---
### Author:  [@uwe\_keim](https://meta.discourse.org/u/uwe_keim)
#### Post date: [August 4, 2015, 3:01pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/5 "2015-08-04T15:01:04Z")
Thanks. My post seems to be a duplicate of your post
[https://meta.discourse.org/t/the-official-discourse-tags-plugin-discourse-tagging/26482/104?u=uwe\_keim](https://meta.discourse.org/t/the-official-discourse-tags-plugin-discourse-tagging/26482/104)
---
### Author:  [@eviltrout](https://meta.discourse.org/u/eviltrout)
#### Post date: [August 4, 2015, 3:21pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/6 "2015-08-04T15:21:46Z")
I’ve fixed this issue in the tagging plugin and it’s now compatible with our stable/beta branches again without failing:
[https://github.com/discourse/discourse-tagging/commit/04513d372c386a741aa63c3bca7db90784dabb40](https://github.com/discourse/discourse-tagging/commit/04513d372c386a741aa63c3bca7db90784dabb40)
@sam we should discuss why I think the extend APIs I baked in there are a good idea – it would have prevented this issue for example.
---
### Author:  [@uwe\_keim](https://meta.discourse.org/u/uwe_keim)
#### Post date: [August 4, 2015, 5:35pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/7 "2015-08-04T17:35:20Z")
Works again, thank you for your fast help.
---
### Author:  [@zogstrip](https://meta.discourse.org/u/zogstrip)
#### Post date: [August 4, 2015, 5:48pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/8 "2015-08-04T17:48:14Z")