# Migration Version Error when Updating Discourse

**URL:** <https://meta.discourse.org/t/migration-version-error-when-updating-discourse/229985>\
**Category:** Self-hosting\
**Created:** [June 15, 2022, 12:49am UTC](https://meta.discourse.org/t/migration-version-error-when-updating-discourse/229985 "2022-06-15T00:49:11Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![blake](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/blake/32/157322_2.png) [@blake](https://meta.discourse.org/u/blake)\
**Post date:** [June 15, 2022, 3:59pm UTC](https://meta.discourse.org/t/migration-version-error-when-updating-discourse/229985/4 "2022-06-15T15:59:41Z")

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@hyphalos Trying to trace which migration we might need to update here. Do you by chance have the discourse-calendar plugin installed?

EDIT:

Ah looks like it. Missed this in the logs above on first glance:

`/var/www/discourse/plugins/discourse-calendar/db/post_migrate/20220613073844_unescape_event_name.rb:3:in`

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