From b56d0c546028facd0790ce334336129c88cba0e8 Mon Sep 17 00:00:00 2001
From: vicanso <vicansocanbico@gmail.com>
Date: Mon, 4 Jul 2022 20:39:10 +0800
Subject: [PATCH] fix: fix init fail for empty series list

---
 series.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/series.go b/series.go
index 87a719f..ea71869 100644
--- a/series.go
+++ b/series.go
@@ -132,6 +132,9 @@ type Series struct {
 type SeriesList []Series
 
 func (sl SeriesList) init() {
+	if len(sl) == 0 {
+		return
+	}
 	if sl[len(sl)-1].index != 0 {
 		return
 	}