diff --git a/error.go b/error.go
index 7224586..6519b6e 100644
--- a/error.go
+++ b/error.go
@@ -35,7 +35,9 @@ func filterNilErrors(errs []error) (notNilErrs []error) {
 }
 
 func Join(errs ...error) (result error) {
+	fmt.Println(errs)
 	errs = filterNilErrors(errs)
+	fmt.Println(errs)
 	if len(errs) == 0 {
 		return nil
 	}