[Bug]Error occured when trying to connect to invalid servers

[HaHaWTH]

Describe the bug
When players trying to connect to an invalid(e.g. unknownhost) server, error and stacktrace occurs

To Reproduce
Steps to reproduce the behavior:

1. Add a absent server in the config.yml(e.g. 87264687.fdygh.io:26121)
2. Connect to the server
3. See error and stacktrace
   Screenshots
   If applicable, add screenshots to help explain yourproblem.
   

I have already disabled detailed logger and exceptions

Desktop (please complete the following information):

• OS: Windows10