# KeyError가 발생합니다
**URL:** https://community.creditcoin.org/t/keyerror/71
**Category:** Mining
**Created:** [October 16, 2020, 10:05am UTC](https://community.creditcoin.org/t/keyerror/71 "2020-10-16T10:05:08Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@nauti16](https://community.creditcoin.org/u/nauti16)
#### Post date: [October 16, 2020, 10:05am UTC](https://community.creditcoin.org/t/keyerror/71/1 "2020-10-16T10:05:08Z")
안녕하세요.
채굴 매뉴얼을 보고 서버설정 완료하고 구동을 하면 아래 에러가 발생하며 멈춰있는 것 같습니다.
sawtooth-validator-default | Traceback (most recent call last):
sawtooth-validator-default | File “/usr/lib/python3/dist-packages/sawtooth\_validator/networking/future.py”, line 79, in run\_callback
sawtooth-validator-default | self.\_callback\_func(self.\_request, self.\_result)
sawtooth-validator-default | File “/usr/lib/python3/dist-packages/sawtooth\_validator/networking/interconnect.py”, line 842, in \_connect\_callback
sawtooth-validator-default | self.remove\_connection(connection.connection\_id)
sawtooth-validator-default | File “/usr/lib/python3/dist-packages/sawtooth\_validator/networking/interconnect.py”, line 1151, in remove\_connection
sawtooth-validator-default | del self.\_connections[connection\_id]
sawtooth-validator-default | KeyError: ‘833ce6d9cb8e94087a29e6015f5c8e892863ff1093f5054cde4a82c774c9a8e68b5777249c2f646d0f93831304cde4e718dd8847184298bea89c6cde1b201e48’
어떻게 하면 해결이 될까요?
---
### Author:  [@anon7085849](https://community.creditcoin.org/u/anon7085849)
#### Post date: [October 16, 2020, 4:13pm UTC](https://community.creditcoin.org/t/keyerror/71/2 "2020-10-16T16:13:08Z")
This question was asked on Nov. 9, 2018, at this discussion forum:
[https://chat.hyperledger.org/channel/sawtooth](https://chat.hyperledger.org/channel/sawtooth) .
But there was no response from Sawtooth designers.