--- a/src/eric7/MicroPython/MicroPythonWidget.py	Tue Nov 26 17:07:48 2024 +0100
+++ b/src/eric7/MicroPython/MicroPythonWidget.py	Tue Nov 26 19:46:36 2024 +0100
@@ -538,6 +538,8 @@
                 return
 
             self.replWidget.replEdit().clear()
+            if self.__interface is None:
+                return
             self.__interface.dataReceived.connect(
                 self.replWidget.replEdit().processData
             )