Update app.py

app.py

@@ -93,9 +93,9 @@ with st.sidebar:
     #     value=(str(min_year), str(max_year)),
     # )
 
-    start_year = int(start_year)
-    end_year = int(end_year)
-    df_mask = (DF["year"] >= start_year) & (DF["year"] <= end_year)
+    # start_year = int(start_year)
+    # end_year = int(end_year)
+    # df_mask = (DF["year"] >= start_year) & (DF["year"] <= end_year)
 
     if author_names:
         authors = [a.strip() for a in author_names.split(",")]