changes

rowers/views/analysisviews.py

@@ -418,6 +418,8 @@ def trendflexdata(workouts, options, userid=0):
             return ('', 'Error: not enough data')
         except TypeError:
             return ('','Error: something wrong with the data')
+        except KeyError:
+            return ('','Error: no {groupby} data'.format(groupby=groupby))
     else:  # pragma: no cover
         try:
             bins = np.arange(datadf['days ago'].min()-binsize,