Update app.py

app.py

@@ -52,10 +52,14 @@ image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_co
 
 with open("prompts.yaml", 'r') as stream:
     prompt_templates = yaml.safe_load(stream)
+
+tools_list = [final_answer]
+if image_generation_tool:  # Only add if it's valid
+    tools_list.append(image_generation_tool)
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer, image_generation_tool], ## add your tools here (don't remove final answer)
+    tools= tools_list, ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,