Improve data type handling in game rotation timeline plot

app.py

@@ -691,8 +691,11 @@ with tab5:
             display = st.container()
             stats_disp = st.container()
             check_rotation = team_backlog.sort_values(by=['GAME_DATE', 'Finish'], ascending=[False, True])
-            check_rotation['Start'] = check_rotation['Start'].astype(float)
-            check_rotation['Finish'] = check_rotation['Finish'].astype(float)
+            
+            # Ensure Start and Finish are numeric and Task is properly set
+            check_rotation['Start'] = pd.to_numeric(check_rotation['Start'], errors='coerce')
+            check_rotation['Finish'] = pd.to_numeric(check_rotation['Finish'], errors='coerce')
+            check_rotation['delta'] = pd.to_numeric(check_rotation['delta'], errors='coerce')
             
             fig = px.timeline(data_frame=check_rotation, 
                             x_start='Start',      # Column containing start times