Fix: Add template definition to base.service

charts/base/templates/service.yaml

@@ -1,3 +1,4 @@
+{{- define "base.service" -}}
 apiVersion: v1
 kind: Service
 metadata:
@@ -33,3 +34,4 @@ spec:
   selector:
     app: {{ .Values.app.name }}
 {{- end }}
+{{- end }}