feat：修改ddql，增加qa问答

main_service.py

@@ -50,6 +50,7 @@ def create_vana():
             "model": config('CHAT_MODEL_NAME', default=''),
         },
     )
+
     return vn
 
 
@@ -111,7 +112,7 @@ def generate_sql_2():
         data["type"]="success"
         return jsonify(data)
     except Exception as e:
-        logger.error("generate sql failed:{e}")
+        logger.error(f"generate sql failed:{e}")
         return jsonify({"type": "error", "error": str(e)})
 
 
@@ -170,7 +171,7 @@ def run_sql_2(id: str, sql: str):
         )
 
     except Exception as e:
-        logger.error("run sql failed:{e}")
+        logger.error(f"run sql failed:{e}")
         return jsonify({"type": "sql_error", "error": str(e)})
 
 if __name__ == '__main__':