Get 500 error after trying to go to CI page (Gitlab 8.1)

I have 500 error on Continius Integration page after update from 8.0.4 to 8.1. I can see builds page for each projects, but i cant retry any build (get 500 error page). Each new commits after update get build status "skipped"

production.log:

Started GET "/ci/admin/projects" for 127.0.0.1 at 2015-10-23 10:50:41 +0300
Processing by Ci::Admin::ProjectsController#index as HTML
Started POST "/ci/api/v1/builds/register.json" for 127.0.0.1 at 2015-10-23 10:50:41 +0300
Completed 500 Internal Server Error in 1999ms (ActiveRecord: 638.3ms)

ActionView::Template::Error (undefined method `ci_commits' for nil:NilClass):
    1: - last_commit = project.commits.last
    2: %tr
    3:   %td
    4:     = project.id
  app/models/ci/project.rb:208:in `commits'
  app/views/ci/admin/projects/_project.html.haml:1:in `_app_views_ci_admin_projects__project_html_haml___4122213969874733497_42640760'
  app/views/ci/admin/projects/index.html.haml:12:in `block in _app_views_ci_admin_projects_index_html_haml__4097100063300920123_25780380'
  app/views/ci/admin/projects/index.html.haml:11:in `_app_views_ci_admin_projects_index_html_haml__4097100063300920123_25780380'


Started POST "/ci/api/v1/builds/register.json" for 127.0.0.1 at 2015-10-23 10:50:48 +0300

@ayufan , @marin

I have similar issue:

Completed 500 Internal Server Error in 648ms (ActiveRecord: 29.4ms)
ActionView::Template::Error (undefined method `tags' for #<CommitStatus:0x000000066294f8>):
21: %td
22: = commit_status.name
23: .pull-right
24: - if commit_status.tags.any?
25: - commit_status.tags.each do |tag|
26: %span.label.label-primary
27: = tag
app/views/projects/commit_statuses/_commit_status.html.haml:24:in `_app_views_projects_commit_statuses__commit_status_html_haml__2260839151018031941_53536540'
app/views/projects/commit/ci.html.haml:46:in `block in _app_views_projects_commit_ci_html_haml__3286523739497137224_116964080'
app/views/projects/commit/ci.html.haml:45:in `each'
app/views/projects/commit/ci.html.haml:45:in `_app_views_projects_commit_ci_html_haml__3286523739497137224_116964080'

@Posp do you use CommitStatus?

Can you check if all migrations are up?

@alex-buraykin

Your problem happens, because of project that was previously on GitLab, but got removed from GitLab, but the CI project is still there.

I'll think what we can do about this.

I haven`t probably remove any project. But how can I check migrations?

Last version 8.0 worked fine...

My version is 8.1.0-ee

btw all runners looks inactive - black dot...

@Posp the problem with runners is that they are online. There was a bug with css status.

I see, but last builds are "skipped" as mentioned

The 500 error is fixed. It should be shipped with 8.1.1.

@Posp Please open separate issue for your problem.

ok, thank you

Status changed to closed

Fixed in 8.1.1

Glad to hear!