caddyserver/caddy · error

%s: %w

Error message

%s: %w

What it means

Error "%s: %w" thrown in caddyserver/caddy.

Source

Thrown at modules/caddytls/leaffolderloader.go:88

	for _, dir := range fl.Folders {
		err := filepath.Walk(dir, func(fpath string, info os.FileInfo, err error) error {
			if err != nil {
				return fmt.Errorf("unable to traverse into path: %s", fpath)
			}
			if info.IsDir() {
				return nil
			}
			if !strings.HasSuffix(strings.ToLower(info.Name()), ".pem") {
				return nil
			}

			certData, err := convertPEMFilesToDERBytes(fpath)
			if err != nil {
				return err
			}
			cert, err := x509.ParseCertificate(certData)
			if err != nil {
				return fmt.Errorf("%s: %w", fpath, err)
			}

			certs = append(certs, cert)

			return nil
		})
		if err != nil {
			return nil, err
		}
	}
	return certs, nil
}

var (
	_ LeafCertificateLoader = (*LeafFolderLoader)(nil)
	_ caddy.Provisioner     = (*LeafFolderLoader)(nil)
	_ caddyfile.Unmarshaler = (*LeafFolderLoader)(nil)
)

View on GitHub (pinned to 50e54ee279)

Solutions

1. Check the wrapped error for the specific file that failed and fix its contents or permissions.

When it happens

Trigger: Thrown at modules/caddytls/leaffolderloader.go:88 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of caddyserver/caddy@50e54ee279 (2026-08-15). Data as JSON: /api/errors/acfc60175327eaa4. Report an issue: GitHub.