From 8c4533a2c38cd9d390484aafa22b5533614d1130 Mon Sep 17 00:00:00 2001
From: Ghostkeeper <rubend@tutanota.com>
Date: Mon, 20 Jul 2020 12:10:08 +0200
Subject: [PATCH] Fix crash when port gets disconnected while iterating

Fixes Sentry issue CURA-11T.
---
 plugins/USBPrinting/USBPrinterOutputDeviceManager.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/plugins/USBPrinting/USBPrinterOutputDeviceManager.py b/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
index c5a017db7f..e3834808db 100644
--- a/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
+++ b/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2018 Ultimaker B.V.
+# Copyright (c) 2020 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
 import threading
@@ -117,6 +117,8 @@ class USBPrinterOutputDeviceManager(QObject, OutputDevicePlugin):
         for port in serial.tools.list_ports.comports():
             if not isinstance(port, tuple):
                 port = (port.device, port.description, port.hwid)
+            if not port[2]:  # HWID may be None if the port got disconnected while processing.
+                continue
             if only_list_usb and not port[2].startswith("USB"):
                 continue