Update app.py

app.py

@@ -180,7 +180,7 @@ def main():
 
     # Display the sorted URLs in columns up to four columns wide
     num_cols = min(4, len(url_data))
-    cols = st.beta_columns(num_cols)
+    cols = st.columns(num_cols)
 
     for i, data in enumerate(url_data):
         col = cols[i % num_cols]