On chat I'm getting the following message. 

In a likely related situation, I see connections and disconnections, but not anything else. I have both channels the same. 

Failed to call hook 'OnPlayerChat' on plugin 'Rustcord v3.2.5' (ArgumentException: oldValue is the empty string.)
  at System.String.ReplaceInternal (System.String oldValue, System.String newValue) [0x00016] in <fb001e01371b4adca20013e0ac763896>:0
  at System.String.Replace (System.String oldValue, System.String newValue) [0x0000e] in <fb001e01371b4adca20013e0ac763896>:0
  at Oxide.Plugins.Rustcord.OnPlayerChat (BasePlayer player, System.String message, ConVar.Chat+ChatChannel channel) [0x00122] in <a6cfedeeb9e54bea8d6ef656500c18c7>:0
  at Oxide.Plugins.Rustcord.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00e25] in <a6cfedeeb9e54bea8d6ef656500c18c7>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <cc99cb05b42e4ea494cdf294badea406>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <99d545163fdd4d57a562df7989f2ca0a>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <99d545163fdd4d57a562df7​

I have the same issue on 3.3.1 but haven't figured out why or how to fix it, yet...

Merged post

I JUST FIXED IT.

So...in your Rustcord.json file under config, look for around line 109, which is where "Filter Settings" is. The words to filter section cannot be empty. I simply put "test" in there, and everything started working. That should work for you.

Hmm, I had left mine defaults.

  "Filter Settings": {
    "Chat Filter: Replacement Word": "<censored>",
    "Chat Filter: Words to Filter": [
      "badword1",
      "badword2"
    ]
  },​