Enhance contest data handling in app.py

- Updated the condition for accessing contest data in session state to prevent duplication frame errors.
- Ensured that the duplication frame is only processed when the contest data is available, improving application stability and user experience.

app.py

@@ -149,7 +149,7 @@ with tab1:
 
 with tab2:
     excluded_cols = ['BaseName', 'EntryCount']
-    if 'Contest' in st.session_state:
+    if 'Contest' in st.session_state and 'duplication_frame' not in st.session_state:
         player_columns = [col for col in st.session_state['Contest'].columns if col not in excluded_cols]
         for col in player_columns:
             st.session_state['Contest'][col] = st.session_state['Contest'][col].astype(str)
@@ -346,6 +346,7 @@ with tab2:
             hide_index=True
         )
 
+    if 'Contest' in st.session_state:
         with st.container():
             tab1, tab2, tab3, tab4, tab5 = st.tabs(['Player Used Info', 'Stack Used Info', 'Stack Size Info', 'General Info', 'Duplication Info'])
             with tab1:
@@ -492,4 +493,4 @@ with tab2:
                 st.dataframe(st.session_state['duplication_frame'].iloc[start_dupe_idx:end_dupe_idx].style.
                              background_gradient(cmap='RdYlGn', subset=['uniques%', 'under_5%', 'under_10%'], axis=0).
                              background_gradient(cmap='RdYlGn', subset=['uniques', 'under_5', 'under_10'], axis=0).
-                             format(dupe_format, precision=2), hide_index=True)
+                             format(dupe_format, precision=2), hide_index=True)