Hi i put plugin in my server and i try download ever time and give me this error

Failed to initialize plugin 'BetterChat v5.2.5' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.BetterChat.Loaded () [0x00013] in <4b0597fc4bd3466d8fa8935f3d9db88d>:0
at Oxide.Plugins.BetterChat.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00038] in <4b0597fc4bd3466d8fa8935f3d9db88d>: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.Plugins.CSharpPlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x0006e] in <80b90e8213db44b29ec2d4111764172c>:0
Unloaded plugin Better Chat v5.2.5 by LaserHydra
No previous version to rollback plugin: BetterChat