Update app.py

app.py

@@ -133,12 +133,15 @@ if not st.session_state.pdf_loaded and "pdf_path" in st.session_state:
         metadata = extract_metadata_llm(st.session_state.pdf_path)
 
         # Display extracted-metadata
-        st.subheader("📄 Extracted Document Metadata")
-        st.subheader("📄 Extracted Document Metadata")
-        st.write(f"**Title:** {metadata.get('Title', 'Unknown')}")
-        st.write(f"**Author:** {metadata.get('Author', 'Unknown')}")
-        st.write(f"**Emails:** {metadata.get('Emails', 'No emails found')}")
-        st.write(f"**Affiliations:** {metadata.get('Affiliations', 'No affiliations found')}")
+        if isinstance(metadata, dict):  # Ensure metadata is a dictionary
+            st.subheader("📄 Extracted Document Metadata")
+            st.write(f"**Title:** {metadata.get('Title', 'Unknown')}")
+            st.write(f"**Author:** {metadata.get('Author', 'Unknown')}")
+            st.write(f"**Emails:** {metadata.get('Emails', 'No emails found')}")
+            st.write(f"**Affiliations:** {metadata.get('Affiliations', 'No affiliations found')}")
+        else:
+            st.error("Metadata extraction failed. Check the LLM response format.")
+
 
         # Embedding Model
         model_name = "nomic-ai/modernbert-embed-base"