Update app.py

app.py

@@ -211,9 +211,9 @@ if fetch_data:
 
             st.subheader("Suggested Metadata Enhancements")
             incomplete_with_desc = incomplete_records[incomplete_records['description'].notnull()]
-        reference_df = metadata_df[metadata_df['subject'].notnull() & metadata_df['description'].notnull()]
-        tfidf_matrix = tfidf.fit_transform(reference_df['description'])
-            if len(filled_descriptions) > 1:
+            reference_df = metadata_df[metadata_df['subject'].notnull() & metadata_df['description'].notnull()]
+            tfidf_matrix = tfidf.fit_transform(reference_df['description'])
+            if len(incomplete_with_desc) > 1 and len(reference_df) > 1:
                 try:
                     tfidf = TfidfVectorizer(stop_words='english')
                     tfidf_matrix = tfidf.fit_transform(filled_descriptions)