{"code": 500, "data": {"traceback": "Traceback (most recent call last):\n  File \"/root/.pyenv/versions/app352/lib/python3.5/site-packages/tornado/web.py\", line 1678, in _execute\n    result = await result\n  File \"/home/worker/project/qcv_web/handlers/base_handlers.py\", line 77, in prepare\n    redis_utils.save_request_record(self.redis_db, real_ip)\n  File \"../qcv_common/utils/redis_utils.py\", line 89, in save_request_record\n    if pre_value + 1 >= 100:\nTypeError: unsupported operand type(s) for +: 'NoneType' and 'int'\n"}, "msg": "Internal Server Error"}