--- a/src/eric7/PluginManager/PluginManager.py	Fri Apr 18 17:25:18 2025 +0200
+++ b/src/eric7/PluginManager/PluginManager.py	Sun Apr 20 15:41:59 2025 +0200
@@ -179,7 +179,8 @@
             self.__networkManager.sslErrors.connect(self.__sslErrors)
         self.__replies = []
 
-        self.__ui.shutdown.connect(self.__shutdown)
+        with contextlib.suppress(AttributeError):
+            self.__ui.shutdown.connect(self.__shutdown)
 
     def finalizeSetup(self):
         """