Update app.py

app.py

@@ -1,4 +1,3 @@
-# app.py
 import asyncio
 import re
 from pathlib import Path
@@ -37,9 +36,9 @@ def _make_pdf(papers):
         pdf.set_font("Helvetica", "B", 11)
         pdf.multi_cell(0, 7, f"{i}. {p.get('title','')}")
         pdf.set_font("Helvetica", size=9)
-        body = f"{p.get('authors','')}
+        body = f"""{p.get('authors','')}
 {p.get('summary','')}
-{p.get('link','')}"
+{p.get('link','')}"""
         pdf.multi_cell(0, 6, body)
         pdf.ln(3)
     return pdf.output(dest="S").encode("latin-1", errors="replace")
@@ -128,7 +127,7 @@ else:
     with vis_tab:
         years = [p.get("published", "")[:4] for p in res["papers"] if p.get("published")]
         if years:
-            st.plotly_chart(px.histogram(years, nbins=10, title="Publication Year"))
+            st.plotly_chart(px.histogram(pd.DataFrame({'year': years}), x='year', nbins=10, title="Publication Year"))
 
     # Protocols Tab
     with proto_tab: