fix

rowers/dataroutines.py

@@ -32,6 +32,7 @@ import zipfile
 import os
 from rowers.models import strokedatafields
 import polars as pl
+from polars.exceptions import ColumnNotFoundError, SchemaError
 
 from rowingdata import (
     KinoMapParser,
@@ -1484,6 +1485,9 @@ def getsmallrowdata_pl(columns, ids=[], doclean=True, workstrokesonly=True, comp
             df = pl.concat(data, rechunk=True)
         except ValueError:  # pragma: no cover
             return pl.DataFrame()
+        except SchemaError:
+            df = pl.concat(data, rechunk=True, how='vertical_relaxed')
+                
 
     else:
         try:

rowers/interactiveplots.py

@@ -199,6 +199,8 @@ def interactive_hr_piechart(df, rower, title, totalseconds=0):
     df = df.with_columns((pl.col("deltat")*pl.col("hr")).alias("deltat"))
 
     sumtimehr = df['deltat'].sum()
+    if sumtimehr == 0:
+        return "", "No HR data"
 
     if totalseconds == 0:
         totalseconds = sumtimehr

rowers/views/analysisviews.py

@@ -2386,7 +2386,7 @@ def history_view_data(request, userid=0):
     
     df = getsmallrowdata_pl(columns, ids=ids)
     try:
-         df = df.with_columns(pl.col('time').diff().clip(lower_bound=0).alias("deltat")) 
+         df = df.with_columns(pl.col('time').diff().clip(lower_bound=0).alias("deltat"))
     except KeyError: # pragma: no cover
         pass