time_and_timedelta() se nezalekne d=None

mo/util_format.py

@@ -83,4 +83,6 @@ def timedelta(d: datetime, ref: Optional[datetime] = None, descriptive: bool = F
 
 
 def time_and_timedelta(d: datetime, ref: Optional[datetime] = None):
+    if d is None:
+        return '–'
     return f"{timeformat(d)} ({timedelta(d, ref)})"