fix

rowers/views/analysisviews.py

@@ -2229,7 +2229,8 @@ def history_view_data(request, userid=0):
          df = df.with_columns(pl.col('time').diff().clip(lower_bound=0).alias("deltat"))
     except KeyError: # pragma: no cover
         pass
-
+    except ColumnNotFoundError:
+        pass
 
     totalmeters, totalhours, totalminutes, totalseconds = get_totals(
         g_workouts)