From a403b957cce4c5ace0290b9100bf7fca6bde6161 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Tue, 12 Oct 2021 17:07:07 +1000
Subject: [PATCH] fix error in webview __del__ on shutdown

---
 qt/aqt/webview.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/qt/aqt/webview.py b/qt/aqt/webview.py
index 0b63d96b8..a05e4d1ba 100644
--- a/qt/aqt/webview.py
+++ b/qt/aqt/webview.py
@@ -664,6 +664,10 @@ document.head.appendChild(style);
         self._page.setContent(cast(QByteArray, bytes("", "ascii")))
 
     def __del__(self) -> None:
-        from aqt import mw
+        try:
+            from aqt import mw
+        except ImportError:
+            # this will fail when __del__ is called during app shutdown
+            return
 
         mw.mediaServer.clear_page_html(id(self))