diff --git a/rowers/views/analysisviews.py b/rowers/views/analysisviews.py
index 782c63bd..f398d8a6 100644
--- a/rowers/views/analysisviews.py
+++ b/rowers/views/analysisviews.py
@@ -416,6 +416,8 @@ def trendflexdata(workouts, options, userid=0):
                 pd.cut(datadf[groupby], bins, labels=False))
         except (ValueError, AttributeError):  # pragma: no cover
             return ('', 'Error: not enough data')
+        except TypeError:
+            return ('','Error: something wrong with the data')
     else:  # pragma: no cover
         try:
             bins = np.arange(datadf['days ago'].min()-binsize,