fixing tests

rowers/views/workoutviews.py

@@ -3406,12 +3406,16 @@ def workout_data_view(request, id=0):
 
     columns = datadf.columns.values
 
-    to_be_dropped = [
+    to_be_dropped_all = [
         'id', 'time', 'hr_an', 'hr_at', 'hr_bottom', 'hr_max',
         'hr_tr', 'hr_ut1', 'hr_ut2', 'x_right',
     ]
 
-    to_be_dropped = [c for c in to_be_dropped if c in columns]
+    to_be_dropped = []
+    
+    for c in to_be_dropped_all:
+        if c in columns:
+            to_be_dropped.append(c)
 
     datadf.drop(labels=to_be_dropped, inplace=True, axis=1)
 
@@ -3854,6 +3858,8 @@ def workout_flexchart3_view(request, *args, **kwargs):
             favoritenr = 0
         except AssertionError:
             favoritenr = 0
+        except ValueError:
+            favoritenr = 0
 
     if 'xparam' in kwargs:
         xparam = kwargs['xparam']