Error: PROXY: Connect failed, reconnecting: Operation canceled

[jiji45]

Hello.
I know it's an old post, but not speaking English, I'm having trouble finding the right solution.
I am under Domoticz V4.9701, I just reinstall Domoticz, and for two days I have this message:
2019-02-03 09: 50: 56.343 Error: PROXY: Connect failed, reconnecting: Operation canceled
Please, how to solve this problem.
Thanks for your help.
(Please reply if possible in French)