Tighten configuration and export handling

redmine_reporter/utils.py

@@ -30,7 +30,10 @@ def get_month_name_from_range(from_date: str, to_date: str) -> str:
 
 def get_version(issue) -> str:
     """Возвращает версию задачи или '<N/A>', если не задана."""
-    return str(getattr(issue, "fixed_version", "<N/A>"))
+    version = getattr(issue, "fixed_version", None)
+    if version is None:
+        return "<N/A>"
+    return str(version)
 
 
 def hours_to_human(hours: float) -> str: