Issue Unable To turn on Fail2Ban , Nothing In Logs

[rushaboswal]

Im trying to turn on fail2ban but it starts and shutsdown again.
Server Info - Plesk Obsidian v18.0.40_build1800211230.16 os_Ubuntu 20.04
This is the log i get

2022-01-12 08:19:11,083 fail2ban.server [883]: INFO --------------------------------------------------
2022-01-12 08:19:11,083 fail2ban.server [883]: INFO Starting Fail2ban v0.11.1
2022-01-12 08:19:11,084 fail2ban.observer [883]: INFO Observer start...
2022-01-12 08:19:11,100 fail2ban.database [883]: INFO Connected to fail2ban persistent database '/var/lib/fail2ban/fail2ban.sqlite3'
2022-01-12 08:19:11,106 fail2ban.jail [883]: INFO Creating new jail 'sshd'
2022-01-12 08:19:11,142 fail2ban.jail [883]: INFO Jail 'sshd' uses pyinotify {}
2022-01-12 08:19:11,153 fail2ban.jail [883]: INFO Initiated 'pyinotify' backend
2022-01-12 08:19:11,155 fail2ban.filter [883]: INFO maxLines: 1
2022-01-12 08:19:11,174 fail2ban.filter [883]: INFO maxRetry: 5
2022-01-12 08:19:11,175 fail2ban.filter [883]: INFO findtime: 600
2022-01-12 08:19:11,175 fail2ban.actions [883]: INFO banTime: 600
2022-01-12 08:19:11,175 fail2ban.filter [883]: INFO encoding: UTF-8
2022-01-12 08:19:11,175 fail2ban.filter [883]: INFO Added logfile: '/var/log/auth.log' (pos = 2929, hash = 92232f7a7596ea20e9879b628261acbc12a82033)
2022-01-12 08:19:11,180 fail2ban.jail [883]: INFO Jail 'sshd' started
2022-01-12 08:19:11,183 fail2ban.server [883]: INFO rollover performed on /var/log/fail2ban.log
2022-01-12 08:20:02,355 fail2ban.filter [883]: INFO [sshd] Found 143.244.148.248 - 2022-01-12 08:20:01
2022-01-12 08:21:39,450 fail2ban.server [883]: INFO Shutdown in progress...
2022-01-12 08:21:39,450 fail2ban.observer [883]: INFO Observer stop ... try to end queue 5 seconds
2022-01-12 08:21:39,471 fail2ban.observer [883]: INFO Observer stopped, 0 events remaining.
2022-01-12 08:21:39,512 fail2ban.server [883]: INFO Stopping all jails
2022-01-12 08:21:39,513 fail2ban.filter [883]: INFO Removed logfile: '/var/log/auth.log'
2022-01-12 08:21:39,561 fail2ban.actions [883]: NOTICE [sshd] Flush ticket(s) with iptables-multiport
2022-01-12 08:21:39,561 fail2ban.jail [883]: INFO Jail 'sshd' stopped
2022-01-12 08:21:39,562 fail2ban.database [883]: INFO Connection to database closed.
2022-01-12 08:21:39,562 fail2ban.server [883]: INFO Exiting Fail2ban