Error: found in Chart.yaml, but missing in charts/ directory: mariadb

**Describe the bug**
when I package the helm chart, the command shows an Error: found in Chart.yaml, but missing in charts/ directory: mariadb

**To Reproduce**
Steps to reproduce the behavior:

```shell
$ helm package .
Error: found in Chart.yaml, but missing in charts/ directory: mariadb
```

**Kubernetes (please complete the following information):**
Kubernetes v1.31.4+rke2r1
helm v3.16.4
