Update api_server: make some parameter optional

api_server.py

@@ -204,9 +204,9 @@ def run_extractor_prompt(req_data):
 
 def run_chat_prompt(req_data):
     prompt = req_data['prompt']
-    staff_profile = req_data['staff_profile']
-    user_profile = req_data['user_profile']
-    dialogue_history = req_data['dialogue_history']
+    staff_profile = req_data.get('staff_profile', {})
+    user_profile = req_data.get('user_profile', {})
+    dialogue_history = req_data.get('dialogue_history', [])
     model_name = req_data['model_name']
     current_timestamp = req_data['current_timestamp'] / 1000
     prompt_context = {**staff_profile, **user_profile}