NoMethodError: undefined method `id' for nil:NilClass

https://sentry.gitlap.com/gitlab/gitlabcom/issues/23772/

NoMethodError: undefined method `id' for nil:NilClass
  lib/api/v3/issues.rb:109:in `block (2 levels) in <class:Issues>'
    issues = find_issues(project_id: project.id)
  lib/gitlab/middleware/multipart.rb:93:in `call'
    return @app.call(env) if encoded_message.blank?
  lib/gitlab/request_profiler/middleware.rb:14:in `call'
    @app.call(env)
  lib/gitlab/middleware/go.rb:16:in `call'
    @app.call(env)
  lib/gitlab/etag_caching/middleware.rb:14:in `call'
    return @app.call(env) unless enabled_for_current_route?(env)
...
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NoMethodError: undefined method `id' for nil:NilClass