Add troubleshooting entry for helm pull --debug HTTP output

versioned_docs/version-3/faq/troubleshooting.md

@@ -128,6 +128,16 @@ For example:
 helm list -v 6
 ```
 
+### Debugging HTTP requests when pulling charts
+
+To troubleshoot HTTP issues with `helm pull`, use the `--debug` flag. This outputs the URL being fetched and the response status, helping you diagnose connectivity problems, authentication failures, or incorrect repository URLs.
+
+For example:
+
+```console
+$ helm pull myrepo/mychart --debug
+```
+
 ### Tiller installations stopped working and access is denied
 
 Helm releases used to be available from <https://storage.googleapis.com/kubernetes-helm/>. As explained in ["Announcing get.helm.sh"](https://helm.sh/blog/get-helm-sh/), the official location changed in June 2019. [GitHub Container Registry](https://github.com/orgs/helm/packages/container/package/tiller) makes all the old Tiller images available.