# Blank upgrade page afer upgrading docker manager

**URL:** <https://meta.discourse.org/t/blank-upgrade-page-afer-upgrading-docker-manager/157115>\
**Category:** Bug\
**Created:** [July 8, 2020, 5:17am UTC](https://meta.discourse.org/t/blank-upgrade-page-afer-upgrading-docker-manager/157115 "2020-07-08T05:17:24Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![Stanzilla](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/stanzilla/32/166422_2.png) [@Stanzilla](https://meta.discourse.org/u/Stanzilla)\
**Post date:** [July 7, 2020, 8:04pm UTC](https://meta.discourse.org/t/blank-upgrade-page-afer-upgrading-docker-manager/157115/4 "2020-07-07T20:04:30Z")

</div>

Message (2 copies reported)

NoMethodError (undefined method `find_compatible_git_resource' for Discourse:Module) /var/www/discourse/plugins/docker_manager/lib/docker_manager/git_repo.rb:116:in `tracking\_branch’

Backtrace

```plaintext
/var/www/discourse/plugins/docker_manager/lib/docker_manager/git_repo.rb:116:in `tracking_branch'
/var/www/discourse/plugins/docker_manager/lib/docker_manager/git_repo.rb:11:in `initialize'
/var/www/discourse/plugins/docker_manager/lib/docker_manager/git_repo.rb:77:in `new'
/var/www/discourse/plugins/docker_manager/lib/docker_manager/git_repo.rb:77:in `find_all'
/var/www/discourse/plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:28:in `repos'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.1/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.1/lib/abstract_controller/base.rb:195:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.1/lib/action_controller/metal/rendering.rb:30:in `process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.3.1/lib/abstract_controller/callbacks.rb:42:in `block in process_action'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/callbacks.rb:135:in `run_callbacks'

```

Env

HTTP HOSTS

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_[View the full topic](https://meta.discourse.org/t/blank-upgrade-page-afer-upgrading-docker-manager/157115)._