diff --git a/qt.py b/qt.py
index fb47d1a..8da5abf 100644
--- a/qt.py
+++ b/qt.py
@@ -3998,10 +3998,12 @@ class BalCalendar:
 
     @staticmethod
     def open_with_default_app(calendar_app, path):
+        _logger.debug("opening calendar app")
         try:
             subprocess.check_call([calendar_app, path])
             return True
         except Exception as _e:
+            _logger.error(f"starting calendar app linux failed:{e}")
             try:
                 import os
                 os.startfile(path)