Update src/streamlit_app.py

src/streamlit_app.py

@@ -573,6 +573,11 @@ def show_main_app():
         type=["pdf"],
         accept_multiple_files=True,
         key="pdf_uploader")
+        
+        # Initialize processed files list if not present
+        if "processed_files" not in st.session_state:
+            st.session_state.processed_files = []
+
 
         # Filter out already processed files so they disappear from uploader
         display_files = [f for f in uploaded_files if f.name not in st.session_state.get("processed_files", [])]