fix: skips unconvertable types

and emmits WARN to stdout

pkg/kfconfig/ossmplugin/types.go

@@ -1,6 +1,7 @@
 package ossmplugin
 
 import (
+	"fmt"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"reflect"
 )
@@ -84,14 +85,21 @@ func setDefaults(obj interface{}) {
 		field := value.Field(i)
 		tag := typ.Field(i).Tag.Get("default")
 
-		if tag != "" && field.CanSet() && isEmptyValue(field) {
-			defaultValue := reflect.ValueOf(tag)
-			field.Set(defaultValue)
-		}
-
 		if field.Kind() == reflect.Struct {
 			setDefaults(field.Addr().Interface())
 		}
+
+		if tag != "" && field.IsValid() && field.CanSet() && isEmptyValue(field) {
+			defaultValue := reflect.ValueOf(tag)
+			targetType := field.Type()
+			if defaultValue.Type().ConvertibleTo(targetType) {
+				convertedValue := defaultValue.Convert(targetType)
+				field.Set(convertedValue)
+			} else {
+				panic(fmt.Sprintf("WARN: unable to convert \"%s\" to %s\n", defaultValue, targetType.Name()))
+			}
+		}
+
 	}
 }