Heatmap charts in monitoring dashboard is broken
Summary
Heatmap charts in the monitoring dashboard are broken. I created a chart with the example provided in the docs https://docs.gitlab.com/ee/user/project/integrations/prometheus.html#heatmaps in the all_chart_type dashboard in the monitor-sandbox project. The page loads but the heatmap doesn't show up.
I used the following config from the docs
dashboard: 'Dashboard Title'
panel_groups:
- group: 'Group Title'
panels:
- title: "Heatmap"
type: "heatmap"
metrics:
- id: 10
query: 'sum(rate(nginx_upstream_responses_total{upstream=~"%{kube_namespace}-%{ci_environment_slug}-.*"}[60m])) by (status_code)'
unit: req/sec
label: "Status code"
Sample project
https://gitlab.com/gitlab-org/monitor/monitor-sandbox/-/environments/711946/metrics?dashboard=.gitlab%2Fdashboards%2Fall_chart_types.yml