updated error message

pre.py

@@ -59,7 +59,7 @@ def preprocess_xlsx(uploaded_file):
     df['Failed Scenario'] = df['Failed Scenario'].astype(str).map({'TRUE': True, 'FALSE': False})
     
     # Get error messages from the first sheet
-    error_messages = error_df[['Scenario Name', 'Error message']].copy()
+    error_messages = error_df[['Scenario Name', 'Error Message']].copy()
     
     # Extract date from filename (e.g., RI2211_batch_20250225_27031.xlsx)
     filename = uploaded_file.name