Update app.py

app.py

@@ -125,14 +125,23 @@ def save_feedback_to_excel(name, email, feedback):
 
     # Check if the file already exists
     if os.path.exists(feedback_file):
-        # Append to existing file
-        existing_df = pd.read_excel(feedback_file)
-        df = pd.concat([existing_df, df], ignore_index=True)
-
-    # Save to Excel
-    df.to_excel(feedback_file, index=False, engine='openpyxl')
-
-    st.success("Feedback submitted successfully!")        
+        try:
+            # Load the existing file using the openpyxl engine
+            existing_df = pd.read_excel(feedback_file, engine='openpyxl')
+            df = pd.concat([existing_df, df], ignore_index=True)
+        except Exception as e:
+            st.error(f"Error reading existing feedback file: {e}")
+            return
+    else:
+        # If file doesn't exist, just proceed with the new DataFrame
+        st.success("Feedback file created and feedback saved!")
+    
+    try:
+        # Save to Excel using the openpyxl engine
+        df.to_excel(feedback_file, index=False, engine='openpyxl')
+        st.success("Feedback saved successfully!")
+    except Exception as e:
+        st.error(f"Error saving feedback to Excel: {e}")    
 def side():        
     with st.sidebar.form(key='feedback_form'):