Fix: docGPT_tool is None

Author: Lin-jun-xiang

agent/agent.py

@@ -66,6 +66,7 @@ def create_llm_chain(self) -> Tool:
             description='useful for general purpose queries and logic'
         )
         return tool
+
     def initialize(self, tools):
         for tool in tools:
             if isinstance(tool, Tool):

app.py

@@ -88,7 +88,7 @@ def load_api_key() -> None:
         if temp_file_path:
             os.remove(temp_file_path)
 
-        docGPT, calculate_tool, search_tool = None, None, None
+        docGPT_tool, calculate_tool, search_tool = None, None, None
 
         try:
             agent_ = AgentHelper()