Error 500 in /api/v4/internal caused by a `nil` BroadcastMessage.current
https://sentry.gitlap.com/gitlab/gitlabcom/issues/37255/
NoMethodError: undefined method `last' for nil:NilClass
lib/api/internal.rb:116:in `block (2 levels) in <class:Internal>'
if message = BroadcastMessage.current.last
lib/gitlab/performance_bar/peek_performance_bar_with_rack_body.rb:16:in `call'
status, headers, body = @app.call(env)
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/database/load_balancing/rack_middleware.rb:37:in `call'
result = @app.call(env)
...
(107 additional frame(s) were not displayed)
NoMethodError: undefined method `last' for nil:NilClass