I've been debugging an issue for hours until I realized how helm values reference other values incorrectly in nested YAML structures https://apprecode.com/blog/helm-reference-and-v... It’s tricky when you use tpl and expect certain context to be available. Best practice is to always test your rendered output with helm template before deploying. Misunderstanding how helm values reference other values can lead to subtle bugs in production. Documentation helps, but hands-on testing is key.