I'm trying to do /ping and /pong in chat to check my own ping, but nothing appears and the following error is thrown in the console.

Failed to call hook 'PingCommand' on plugin 'Ping v1.8.0' (FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.)
at System.Text.StringBuilder.AppendFormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x000ff] in <fb001e01371b4adca20013e0ac763896>:0
at System.String.FormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x00023] in <fb001e01371b4adca20013e0ac763896>:0
at System.String.Format (System.String format, System.Object[] args) [0x00020] in <fb001e01371b4adca20013e0ac763896>:0
at Oxide.Plugins.Ping.Lang (System.String key, System.String id, System.Object[] args) [0x0000e] in <6b1e700fad774037a697039e800e5749>:0
at Oxide.Plugins.Ping.PingCommand (Oxide.Core.Libraries.Covalence.IPlayer player, System.String command, System.String[] args) [0x00023] in <6b1e700fad774037a697039e800e5749>:0
at Oxide.Plugins.Ping.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x002c2] in <6b1e700fad774037a697039e800e5749>: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.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <ec05e0208c9149bba43236ca58fea105>:0​

I'm not sure what I can do to fix it? I have tried a clean install. Maybe you know? :)

All the best,
Frozen.

You appear to have customized your oxide/lang for the plugin wrongly.

Ah, cheers! I should have just read the error code, the fix is literally in the title hehe. Thanks for pointing it out :)