MySQL Not working Error

[Dhruv-2103]

What version of AdvancedBan (/AdvancedBan) are you using?
2.3.0

What kind of server do you have (Bungeecord/single server)?
Bungeecord

What server version (/version) are you using?
1.20.1

Please provide the EXACT steps required to reproduce the problem...

1. Starting / restarting the Proxy

Any error/log post it through pastebin.com and link it here. (Also include /plugins/AdvancedBan/logs/latest.log)
lastest.log > https://pastebin.com/pUXKNpMf
Error in Proxy Console > https://pastebin.com/HzqhJB97
latest.log

[Dhruv-2103]

Proxy Error in console when someone try to join

13:30:02 [INFO] [AdvancedBan] An unexpected error has occurred connecting to the database
Check if your MySQL data is correct and if your MySQL-Server is online
Please check the plugins/AdvancedBan/logs/latest.log file and report this error in: https://github.com/DevLeoko/AdvancedBan/issues