Going to the vulnerability report page returns an error

Summary

Going to the vulnerability report page returns an error.

Steps to reproduce

• Have a lot of reports
• Go to security and compliance menu > vulnerability report
• See error

Example Project

What is the current bug behavior?

An error is returned and the dashboard is empty

What is the expected correct behavior?

Data being populated

Relevant logs and/or screenshots

PG::QueryCanceled: ERROR:  canceling statement due to statement timeout

  lib/gitlab/graphql/tracers/timer_tracer.rb:20:in `trace'
    yield
  lib/gitlab/graphql/generic_tracing.rb:48:in `with_labkit_tracing'
    return yield unless Labkit::Tracing.enabled?
  lib/gitlab/graphql/generic_tracing.rb:38:in `platform_trace'
    with_labkit_tracing(tags, &block)
  lib/gitlab/graphql/tracers/logger_tracer.rb:14:in `trace'
    yield
  lib/gitlab/graphql/tracers/metrics_tracer.rb:13:in `trace'
    result = yield
...
(245 additional frame(s) were not displayed)

ActiveRecord::QueryCanceled: PG::QueryCanceled: ERROR:  canceling statement due to statement timeout

https://sentry.gitlab.net/gitlab/gitlabcom/issues/3313692/events/a0d6f7cc73f04a8487a5cc3d375ee858/

Output of checks

This bug happens on GitLab.com

Results of GitLab environment info

Expand for output related to GitLab environment info

(For installations with omnibus-gitlab package run and paste the output of:
`sudo gitlab-rake gitlab:env:info`)

(For installations from source run and paste the output of:
`sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)

Results of GitLab application Check

Expand for output related to the GitLab application check

(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)
(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)
(we will only investigate if the tests are passing)

Possible fixes