quiske fixes

rowers/plannedsessions.py

@@ -320,6 +320,9 @@ def get_execution_report(rower, startdate, enddate, plan=None):
 
 
 def get_indoorraces(workout):
+    if workout is None:
+        return []
+
     races1 = VirtualRace.objects.filter(
         sessiontype='indoorrace',
         startdate__lte=workout.date,
@@ -327,6 +330,10 @@ def get_indoorraces(workout):
         sessionmode='distance',
         sessionvalue=workout.distance)
 
+
+    if workout.duration is None:
+        workout.duration = timedelta(0)
+
     if workout.duration.second == 0 and workout.duration.microsecond == 0:
         duration = 60*workout.duration.hour+workout.duration.minute