BugFix: BottomBar File delete if no file exists

signals.py

@@ -31,7 +31,7 @@ def bottombar_auto_delete_file_on_change(instance: BottomBar, **kwargs):
         return False
 
     new_file = instance.icon
-    if not old_file == new_file:
+    if not old_file == new_file and old_file:
         if os.path.isfile(old_file.path):
             os.remove(old_file.path)