Troubleshooting a dashing widget

I have created a widget, to display the server load. However, it doesn't display the server load.

dashboard.erb

<li data-row="1" data-col="1" data-sizex="1" data-sizey="1">
  <div data-id="serverload" data-view="Graph" data-title="Server load" data-moreinfo="1 min intervals" ></div>
</li>

jobs/serverload.rb

points = []
(1..10).each do |i|
  points << { x: i, y: 0 }
end
last_x = points.last[:x]

SCHEDULER.every '1m' do
  points.shift
  last_x += 1
  uptime = %x('uptime').gsub(/.*: /, '\1').gsub(/,/, '\1')
  points << { x: last_x, y: uptime[0..3].to_f }
  send_event('loadavg1min', points: points)
end

It simply, displays the following. How can we troubleshoot this particular widget and figure out where it is failing?

Going off of the example in the docs, try adding the first_in: option as well as passing in a hash as the second argument to send_event

Try:

SCHEDULER.every '1m', first_in: 1.second.since do
  points.shift
  last_x += 1
  uptime = %x('uptime').gsub(/.*: /, '\1').gsub(/,/, '\1')
  points << { x: last_x, y: uptime[0..3].to_f }
  send_event('loadavg1min', { points: points })
end

docs:

# :first_in sets how long it takes before the job is first run. In this case, 
it is run immediately
Dashing.scheduler.every '1m', first_in: 1.second.since do |job|
  Dashing.send_event('karma', { current: rand(1000) })
end