From 4174f361f1064c7be2b2e8e327dcb03d192590d9 Mon Sep 17 00:00:00 2001
From: Stone Li <stone.li@bambulab.com>
Date: Tue, 11 Apr 2023 11:58:11 +0800
Subject: [PATCH] FIX: fix crash when no sec_link

Change-Id: I41aa905b0dcac3d5b162fea5b19a1d2c6aa72b68
Signed-off-by: Stone Li <stone.li@bambulab.com>
---
 src/slic3r/GUI/DeviceManager.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index 7db3e4fd4..37b203754 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -3888,7 +3888,10 @@ void DeviceManager::on_machine_alive(std::string json_str)
         std::string printer_signal  = j["dev_signal"].get<std::string>();
         std::string connect_type    = j["connect_type"].get<std::string>();
         std::string bind_state      = j["bind_state"].get<std::string>();
-        std::string sec_link        = j["sec_link"].get<std::string>();
+        std::string sec_link = "";
+        if (j.contains("sec_link")) {
+            sec_link = j["sec_link"].get<std::string>();
+        }
 
         MachineObject* obj;