Update app.py

app.py

@@ -39,7 +39,8 @@ embeddings = HuggingFaceInstructEmbeddings(model_name=embed_model)
 
 def initialize(arxivcode):  
     docs = retriever.invoke(str(arxivcode))
-    docs[0].metadata['Published'] = str(docs[0].metadata['Published'])
+    for i in range(len(docs)): 
+        docs[i].metadata['Published'] = str(docs[i].metadata['Published'])
 
     def format_docs(docs):
         return "\n\n".join(doc.page_content for doc in docs)