Fix: Check BOT_AVAILABLE before using bot module

app.py

@@ -943,6 +943,10 @@ def _create_demo():
         logger.info("=" * 80)
         logger.info("Starting demo creation...")
         logger.info(f"IS_SPACES: {IS_SPACES}")
+        logger.info(f"BOT_AVAILABLE: {BOT_AVAILABLE}")
+        
+        if not BOT_AVAILABLE:
+            raise ImportError("bot module is not available - cannot create demo")
         
         # Initialize with default args
         parser = argparse.ArgumentParser()