Failed to call internal hook 'OnPlayerDisconnected' on plugin 'Rustcord v3.4.1' [72085565] (Object reference not set to an instance of an object)
at void Oxide.Plugins.Rustcord.GetChannel(DiscordClient c, Snowflake chan_id, Action<DiscordChannel> cb, Snowflake guildid) in /home/container/carbon/plugins/Rustcord.cs:line 403

Getting the same error when I initialize Rustcord as well:

Failed to initialize plugin 'Rustcord v3.4.1' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Rustcord.Loaded () [0x0056b] in <fc5abb8d499a460bb22c1d581e13820c>:0

  at Oxide.Plugins.Rustcord.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x037ff] in <fc5abb8d499a460bb22c1d581e13820c>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9c80d821d00a44c9a24497c73ad2d20d>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <d646191a355d43a6b3ab36b7ee14c740>:0

  at Oxide.Plugins.CSharpPlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x000cf] in <9c80d821d00a44c9a24497c73ad2d20d>:0

Failed to call hook 'OnDiscordClientCreated' on plugin 'Rustcord v3.4.1' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Rustcord.SubscribeHooks () [0x004b4] in <fc5abb8d499a460bb22c1d581e13820c>:0

  at Oxide.Plugins.Rustcord.OnDiscordClientCreated () [0x000f8] in <fc5abb8d499a460bb22c1d581e13820c>:0

  at Oxide.Plugins.Rustcord.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00a1c] in <fc5abb8d499a460bb22c1d581e13820c>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9c80d821d00a44c9a24497c73ad2d20d>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <d646191a355d43a6b3ab36b7ee14c740>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <d646191a355d43a6b3ab36b7ee14c740>:0