fix(cmd/kratos): filepath walk nil pointer reference problem (#1762)

* fix(cmd/kratos): filepath walk nil pointer reference problem

* Update path.go

cmd/kratos/internal/base/path.go

@@ -103,7 +103,7 @@ func hasSets(name string, sets []string) bool {
 
 func Tree(path string, dir string) {
 	_ = filepath.Walk(path, func(path string, info os.FileInfo, err error) error {
-		if !info.IsDir() {
+		if err == nil && info != nil && !info.IsDir() {
 			fmt.Printf("%s %s (%v bytes)\n", color.GreenString("CREATED"), strings.Replace(path, dir+"/", "", -1), info.Size())
 		}
 		return nil