From 586c861274b16ff06a11e451cfa30f632e0d0ca4 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Thu, 18 Apr 2024 09:25:42 -0400
Subject: [PATCH] fix retraction attempt on empty sequence

---
 src/kiri/print.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/kiri/print.js b/src/kiri/print.js
index a5e3328d..c1305c93 100644
--- a/src/kiri/print.js
+++ b/src/kiri/print.js
@@ -533,7 +533,9 @@ class Print {
                     });
                     break;
                 case 'G10':
-                    seq.last().retract = true;
+                    if (seq && seq.length) {
+                        seq.last().retract = true;
+                    }
                     break;
                 case 'G11':
                     break;