Update app.py

app.py

@@ -94,28 +94,28 @@ def main():
         uploaded_file = st.file_uploader("Select a file containing MAF application pre-filtering data (see instructions in the sidebar)")
 
         if uploaded_file is not None:
-            # try:
-            if not st.session_state['data_processed']:
-                st.session_state['df'] = process_data(uploaded_file, sens_level)
-                st.session_state['data_processed'] = True
-
-            df = st.session_state['df']
-
-            # Get the current date
-            current_datetime = datetime.now().strftime('%d-%m-%Y_%H-%M-%S')
-            output_filename = 'processed_applications_'+current_datetime+'.csv'
-
-            output_file = 'processed_applications.csv'
-            df.to_csv(output_file, index=False)
-            st.download_button(
-                label="Download data as CSV",
-                data=open(output_file, 'rb'),
-                file_name=output_filename,
-                mime='text/csv',
-            )
+            try:
+                if not st.session_state['data_processed']:
+                    st.session_state['df'] = process_data(uploaded_file, sens_level)
+                    st.session_state['data_processed'] = True
+    
+                df = st.session_state['df']
+    
+                # Get the current date
+                current_datetime = datetime.now().strftime('%d-%m-%Y_%H-%M-%S')
+                output_filename = 'processed_applications_'+current_datetime+'.csv'
+    
+                output_file = 'processed_applications.csv'
+                df.to_csv(output_file, index=False)
+                st.download_button(
+                    label="Download data as CSV",
+                    data=open(output_file, 'rb'),
+                    file_name=output_filename,
+                    mime='text/csv',
+                )
 
-            # except:
-            #     st.error("Failed to process the file. Please ensure your column names match the template file.")
+            except:
+                st.error("Failed to process the file. Please ensure your column names match the template file.")
 
 
     else: