Seeing the following error:

09/02/2021 21:12:04 | Failed to call hook 'OnEntityTakeDamage' on plugin 'Arkan v1.0.18' (KeyNotFoundException: The given key was not present in the dictionary.)
at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in <eae584ce26bc40229c1b1aa476bfa589>:0
at Oxide.Plugins.Arkan.OnEntityTakeDamage (BasePlayer entity, HitInfo info) [0x00337] in <68fc5dc681e0419ab5a9d6f7fd0c6985>:0
at Oxide.Plugins.Arkan.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x005da] in <68fc5dc681e0419ab5a9d6f7fd0c6985>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <31122a27a2414cd799150f8677cf39d4>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <0fbce81d88d64454b3e7abb24df7026b>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <0fbce81d88d64454b3e7abb24df7026b>:0​

We can see Arkan recording in the console but it is not being sent to Discord webhook.