Update app.py

app.py

@@ -115,8 +115,11 @@ class SemanticSearch:
 def load_recommender(path, start_page=1):
     global recommender
     texts, pdf_parse_status = pdf_to_text(path, start_page=start_page)
-    chunks  = text_to_chunks(texts, start_page=start_page)
-    recommender.fit(chunks)
+    if pdf_parse_status == 0:
+        return 'file too large.', pdf_parse_status
+    else:
+        chunks  = text_to_chunks(texts, start_page=start_page)
+        recommender.fit(chunks)
     return 'Corpus Loaded.', pdf_parse_status