# Failed upgrade from 2.3.2 to 2.3.6 due to discourse assign plugin

**URL:** <https://meta.discourse.org/t/failed-upgrade-from-2-3-2-to-2-3-6-due-to-discourse-assign-plugin/134841>\
**Category:** Self-hosting\
**Created:** [December 2, 2019, 7:51am UTC](https://meta.discourse.org/t/failed-upgrade-from-2-3-2-to-2-3-6-due-to-discourse-assign-plugin/134841 "2019-12-02T07:51:54Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![nahimov](https://avatars.discourse-cdn.com/v4/letter/n/aca169/32.png) [@nahimov](https://meta.discourse.org/u/nahimov)\
**Post date:** [December 2, 2019, 7:51am UTC](https://meta.discourse.org/t/failed-upgrade-from-2-3-2-to-2-3-6-due-to-discourse-assign-plugin/134841/1 "2019-12-02T07:51:54Z")

</div>

When I try to upgrade from 2.3.2 to 2.3.6 I see this error:

```plaintext
I, [2019-12-02T07:43:47.773465 #1] INFO -- : > cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate'
rake aborted!
ArgumentError: Unknown migration version "6.0"; expected one of "4.2", "5.0", "5.1", "5.2"
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/migration/compatibility.rb:11:in `find'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/migration.rb:536:in `[]'
/var/www/discourse/plugins/discourse-assign/db/migrate/20191119174425_rename_site_setting_assign_emailer.rb:3:in `<top (required)>'
.......................................

```

If I disable discourse-assign plugin - all works fine…  
But! One month later I upgrated another discourse forum from 2.3.2 to 2.3.6 - all passed good…  
What I doing wrong?  
I try:

```plaintext
cd /var/discourse
git pull
./launcher rebuild app

```

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_[View the full topic](https://meta.discourse.org/t/failed-upgrade-from-2-3-2-to-2-3-6-due-to-discourse-assign-plugin/134841)._