# Upgrade with discourse-tagging plugin failed, website down

**URL:** <https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746>\
**Category:** Product Support\
**Created:** [4 Agosto 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:** 1\
**Showing post:** 2

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**Author:** ![jspautsch](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jspautsch/32/62603_2.png) [@jspautsch](https://meta.discourse.org/u/jspautsch)\
**Post date:** [4 Agosto 2015, 2:57pm UTC](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746/2 "2015-08-04T14:57:12Z")

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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

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_[View the full topic](https://meta.discourse.org/t/upgrade-with-discourse-tagging-plugin-failed-website-down/31746)._