Prompt server internal exception please check, what is this problem

[Hellowlonewolf]

操作步骤：
1.进入api模版界面后点击界面上面异步执行api后提示服务内部异常

[Hellowlonewolf]

2019-07-10 14:00:48,480 [ERROR] - Internal Server Error: /api/fastrunner/run_api_tree/
Traceback (most recent call last):
AttributeError: 'ChannelPromise' object has no attribute 'value'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
socket.gaierror: [Errno -2] Name or service not known
2019-07-10 14:00:48,481 [ERROR] - "POST /api/fastrunner/run_api_tree/?token=6391e8462a2c3025a23bacfc7a9fe24f HTTP/1.1" 500 27