Update app.py

app.py

@@ -39,9 +39,11 @@ class BookWritingApp:
         Initialize project orchestrator
         """
         try:
-            # Create project orchestrator 
-            # Note: You may need to adjust this based on how you want to handle API keys
             st.session_state.project_orchestrator = BookWritingOrchestrator()
+        except ValueError as ve:
+            st.error(f"API Key Error: {str(ve)}")
+            st.info("Please ensure your API keys are properly set in the environment variables.")
+            st.session_state.project_orchestrator = None
         except Exception as e:
             st.error(f"Error setting up project orchestrator: {e}")
             st.session_state.project_orchestrator = None