(11:12:14) | Admn Inferno was renamed to ThatGuy
(11:12:14) | Failed to call hook 'RenameCommand' on plugin 'Rename v0.3.0' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Game.Rust.Libraries.Player.Rename (BasePlayer player, System.String name) [0x00023] in <1708c2cb0ceb46ddb63161caa4f7a4a0>:0
at Oxide.Game.Rust.Libraries.Covalence.RustPlayer.Rename (System.String name) [0x00000] in <1708c2cb0ceb46ddb63161caa4f7a4a0>:0
at Oxide.Plugins.Rename.RenameCommand (Oxide.Core.Libraries.Covalence.IPlayer player, System.String command, System.String[] args) [0x00229] in <15ee5e4ce63b464dbc829a82a3b91637>:0
at Oxide.Plugins.Rename.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00198] in <15ee5e4ce63b464dbc829a82a3b91637>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9affce1cd15c4ec183941adef8db1722>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <4452f821def6406d834e4149849fe7ea>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <4452f821def6406d834e4149849fe7ea>:0

That's actually an NRE in Oxide, not this plugin.

It said:

Failed to call hook 'RenameCommand' on plugin 'Rename v0.3.0' (NullReferenceException: Object reference not set to an instance of an object)

so where do I need to look to find resolution to the failing call. Sorry feeling a bit clueless as how to solve this.

Like all plugins, this plugin uses methods from Oxide inside a method of its own, so it will pretty much always fall under its own method. The resolution would be something I'll have to look for in Oxide itself.