Update app.py

app.py

@@ -31,17 +31,20 @@ class BasicAgent:
             model=self.model,
             add_base_tools=True
         )
-        self.agent.prompt_templates['system_prompt'] = """
-        You are a general AI assistant. I will ask you a question. 
-        Your primary goal is to answer the question directly and concisely.
-        If you are providing a direct answer without using any tools, your response content MUST be a single string.
-        Do NOT output a list or sequence as the content of your message unless it is part of a structured tool call.
-        Report your thoughts, and finish your answer with the following template: FINAL ANSWER: [YOUR FINAL ANSWER]. 
-        YOUR FINAL ANSWER should be a number OR as few words as possible OR a comma separated list of numbers and/or strings. 
-        If you are asked for a number, don't use comma to write your number neither use units such as $ or percent sign unless specified otherwise. 
-        If you are asked for a string, don't use articles, neither abbreviations (e.g. for cities), and write the digits in plain text unless specified otherwise. 
-        If you are asked for a comma separated list, apply the above rules depending of whether the element to be put in the list is a number or a string.
-        """
+
+        self.agent.prompt_templates['system_prompt'] = """You are a general AI assistant. I will ask you a question.
+Your primary goal is to answer the question directly and concisely.
+The 'content' field of your response message, even if it's just your thought process before a tool call, MUST be a single string or null. It MUST NOT be a list or any other sequence.
+If you are providing a direct answer without using any tools, your response content MUST be a single string.
+Report your thoughts as a single block of text (a single string).
+Finish your answer with the following template: FINAL ANSWER: [YOUR FINAL ANSWER].
+YOUR FINAL ANSWER should be a number OR as few words as possible OR a comma separated list of numbers and/or strings.
+If you are asked for a number, don't use comma to write your number neither use units such as $ or percent sign unless specified otherwise.
+If you are asked for a string, don't use articles, neither abbreviations (e.g. for cities), and write the digits in plain text unless specified otherwise.
+If you are asked for a comma separated list, apply the above rules depending of whether the element to be put in the list is a number or a string.
+"""
+        print("BasicAgent initialized.")
+        
         
         #self.agent.prompt_templates['system_prompt'] = """