Update app.py

app.py

@@ -40,9 +40,11 @@ model = HfApiModel(
 # Import tool from Hub
 image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
 
-
 with open("prompts.yaml", 'r') as stream:
-    prompt_templates = yaml.safe_load(stream)
+    try:
+        system_prompt = yaml.safe_load(stream)
+    except yaml.YAMLError as exc:
+        print(exc)
 
 prompt_templates['system_prompt'] = system_prompt