try

app.py

@@ -42,22 +42,28 @@ def main():
             c1, c2 = st.columns(2)
 
             with c1:
+               
                 with st.expander("LexRank Summary"):
-                    summary = sumy_summarizer(raw_text)
-                    document_len={"Original":len(raw_text),
+                    try:
+                        summary = sumy_summarizer(raw_text)
+                        document_len={"Original":len(raw_text),
                                   "Summary":len(summary)
                                    }
-                    st.write(document_len)
-                    st.write(summary)
-                    st.info("Rouge Score")
-                    score=evaluate_summary(summary,raw_text)
-                    st.write(score.T)
-                    st.subheader(" ")
-                    score['metrics']=score.index
-                    c=at.Chart(score).mark_bar().encode(
+                        st.write(document_len)
+                        st.write(summary)
+                        st.info("Rouge Score")
+                        score=evaluate_summary(summary,raw_text)
+                        st.write(score.T)
+                        st.subheader(" ")
+                        score['metrics']=score.index
+                        c=at.Chart(score).mark_bar().encode(
                         x='metrics',y='rouge-1'
-                    )
-                    st.altair_chart(c)
+                        )
+                        st.altair_chart(c)
+                    catch:
+                        st.warning('Insufficient data')
+
+                    
 
             with c2:
                 with st.expander("TextRank Summary"):