NullReferenceException at Save_FilesError

this is what i get when i try to ban ip someone, in this case i was trying to ban myself, how do i fix it?

ERROR:Object reference not set to an instance of an object
[Enhanced Ban System]   at Oxide.Plugins.EnhancedBanSystem.PlayerDatabase_ExecuteBan (Oxide.Plugins.EnhancedBanSystem+BanData bandata) [0x00189] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
  at Oxide.Plugins.EnhancedBanSystem.ExecuteBan (System.Object source, Oxide.Plugins.EnhancedBanSystem+BanData bandata, System.Boolean kick) [0x0003a] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
  at Oxide.Plugins.EnhancedBanSystem.PrepareBan (System.Object source, System.String userID, System.String name, System.String ip, System.String reason, System.Double duration, System.Boolean kick) [0x0000f] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
  at Oxide.Plugins.EnhancedBanSystem.BanIP (System.Object source, System.String ip, System.String reason, System.Double duration) [0x00000] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
  at Oxide.Plugins.EnhancedBanSystem.TryBan (System.Object source, System.String[] args) [0x000ac] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
  at Oxide.Plugins.EnhancedBanSystem.cmdBan (Oxide.Core.Libraries.Covalence.IPlayer player, System.String command, System.String[] args) [0x00067] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
Failed to call hook 'OnServerSave' on plugin 'EnhancedBanSystem v5.2.5' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.EnhancedBanSystem.Save_Files () [0x00000] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
  at Oxide.Plugins.EnhancedBanSystem.OnServerSave () [0x00030] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
  at Oxide.Plugins.EnhancedBanSystem.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x01408] in <e2d5496a98f849b9af5cd5cbddd55a69>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <80b90e8213db44b29ec2d4111764172c>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <ec05e0208c9149bba43236ca58fea105>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <ec05e0208c9149bba43236ca58fea105>:0

update PlayerDatabase
https://umod.org/plugins/player-database

see if it helps

Merged post

Just helped the dev with some testing it should be fixed in the current uploaded version

i just fixed reinstalling both, i just deleted all file from PlayerDatabse and Enhanced Ban System, i reinstalled and it worked

you can mark this thread as solved ! @NicoBTW