Update app.py

app.py

@@ -84,15 +84,18 @@ def export_conversation_to_pdf(conversation_history):
     return pdf_path
 
 def main():
-    st.set_page_config(page_title="Gemini Chat QA", layout="wide")
-    st.title("📄 Chat with Your Document using Gemini (Sayandip+Dhiraj+Fazal)")
-
+    # Initialize session state variables
     if "conversation" not in st.session_state:
         st.session_state.conversation = []
     if "document_text" not in st.session_state:
         st.session_state.document_text = ""
     if "chat_active" not in st.session_state:
         st.session_state.chat_active = True
+    if "chat_history" not in st.session_state:
+        st.session_state.chat_history = []  # Initialize chat history
+
+    st.set_page_config(page_title="Gemini Chat QA", layout="wide")
+    st.title("📄 Chat with Your Document using Gemini (Sayandip+Dhiraj+Fazal)")
 
     uploaded_files = st.file_uploader(
         "Upload one or more documents or images",
@@ -187,7 +190,7 @@ def main():
             st.download_button(
                 label="📥 Download Cleaned Conversation as PDF",
                 data=f,
-                file_name="Conversation.pdf",
+                file_name="clean_conversation.pdf",
                 mime="application/pdf"
             )