Update app.py

app.py

@@ -16,8 +16,14 @@ model = OpenAIServerModel(
 web_search  = WebSearch()
 final_answer = FinalAnswer()
 
-with open(os.path.join(CURRENT_DIR, "prompts.yaml"), 'r') as stream:
-    prompt_templates = yaml.safe_load(stream)
+# 1) Load your YAML
+with open(os.path.join(CURRENT_DIR, "prompts.yaml"), "r") as f:
+    prompt_templates = yaml.safe_load(f)
+
+# 2) Flatten EVERYTHING into strings
+for key, val in prompt_templates.items():
+    if not isinstance(val, str):
+        prompt_templates[key] = yaml.safe_dump(val, default_flow_style=False)
 
 agent = CodeAgent(
     model=model,