init clean up

Former-commit-id: f43d7b6b71e57f5a90fcd92657bac0129840e549

swarms/agents/utils/AgentManager.py

@@ -41,9 +41,6 @@ class AgentManager:
             builder = AgentBuilder(self.toolsets)
             builder.build_parser()
 
-            agent = builder.get_agent()
-            if not agent:
-                raise ValueError("Agent not created")
 
             callbacks = []
             eval_callback = EVALCallbackHandler()
@@ -55,12 +52,19 @@ class AgentManager:
                 execution_callback.set_parser(builder.get_parser())
                 callbacks.append(execution_callback)
 
+            #llm init
             callback_manager = CallbackManager(callbacks)
-
             builder.build_llm(callback_manager, openai_api_key)
+            if builder.llm is None:
+                raise ValueError('LLM not created')
 
             builder.build_global_tools()
 
+            #agent init
+            agent = builder.get_agent()
+            if not agent:
+                raise ValueError("Agent not created")
+
             memory: BaseChatMemory = self.get_or_create_memory(session)
             tools = [
                 *builder.get_global_tools(),