tpl: Change error message on missing resource

Fixes #6942

diff --git a/tpl/resources/resources.go b/tpl/resources/resources.go
index fd0ffc5ece01a7f3a65ec57f7698cc7c812e3ef1..be10510f2b45bc19f3c8f112b6c1909ef4d29ec1 100644 (file)
--- a/tpl/resources/resources.go
+++ b/tpl/resources/resources.go
@@ -299,6 +299,9 @@ func (ns *Namespace) resolveArgs(args []interface{}) (resources.ResourceTransfor
 
        r, ok := args[1].(resources.ResourceTransformer)
        if !ok {
+               if _, ok := args[1].(map[string]interface{}); !ok {
+                       return nil, nil, fmt.Errorf("no Resource provided in transformation")
+               }
                return nil, nil, fmt.Errorf("type %T not supported in Resource transformations", args[0])
        }